Tag Archives: cognition

Racism, science, and common sense

John Edward Terrell


Five ways to stop sounding like a racist if you aren’t one.

If you think racism isprejudice, discrimination, or antagonism directed against someone of a different race based on the belief that one’s own race is superior,” science has something surprising to tell you.


WHAT A DIFFERENCE A DECADE CAN MAKE. Back in 2006, Angela Davis remarked during a keynote address at the University of Wyoming honoring Martin Luther King Jr.’s birthday: “We have been basically persuaded that we should not talk about racism.”  Following the acquittal of George Zimmerman in the shooting death of African-American teen Trayvon Martin in 2013, the activist movement Black Lives Matter was born. Since then the issue of racism has been front and center in American politics. What remains elusive, however, is why racism however motivated finds such fertile ground in the human psyche.

The Earth is flat

Kyrie Irving, who plays basketball brilliantly for the Cleveland Cavaliers, made headlines in February 2017 for declaring boldly that the Earth is flat. He was perhaps pulling our collective leg.  His stated rationale, however, has more than a little bit of good old common sense to back it up:

“For what I’ve known for as many years and what I’ve come to believe, what I’ve been taught, is that the Earth is round,” he continued. “But if you really think about it from a landscape of the way we travel, the way we move, and the fact that—can you really think of us rotating around the sun and all planets aligned, rotating in specific dates, being perpendicular with what’s going on with these planets?”

Crazy thinking?  Maybe, but then what about this? A poll published two years ago by the U.S. National Science Foundation found that 26% of Americans don’t know that despite appearances to the contrary, the Sun does not go around the Earth.   Perhaps more astonishing, when asked, 52% of Americans evidently don’t agree with the statement that humans evolved from earlier animal species.

You don’t have to be Bill Nye or Neil deGrasse Tyson to see that all these instances of scientific ignorance make perfect sense from a common sense point of view despite being wrong. Furthermore, it wasn’t all that long ago most people on Earth in point of fact were misinformed in precisely these ways: yes, of course, the Earth is flat; yes, it is obvious that the Sun goes around the Earth; and haven’t you heard? Humans were created in their present form by a special act of Divine Will.

. . . and races are real

There are no polls I know of to back up the claim. Even so, it seems likely many people today—maybe even most—would also say they can’t possibly be at all racist because, don’t you know?, they don’t look down upon people in other races (see the dictionary definition reprinted above).

Editorial cartoon showing a Chinese man, surrounded by luggage labeled “Industry”, “Order”, “Sobriety”, and “Peace”, being excluded from entry to the “Golden Gate of Liberty”. The sign next to the iron door reads, “Notice—Communist, Nihilist, Socialist, Fenian & Hoodlum welcome. But no admittance to Chinamen.” At the bottom, the caption reads, “THE ONLY ONE BARRED OUT. Enlightened American Statesman—’We must draw the line somewhere, you know.'” 1882. Source: https://commons.wikimedia.org/wiki/File:The_only_one_barred_out_cph.3b48680.jpg. . . and races are real

This argument may be socially honorable, but if this is what many truly believe, then there are people who need to hear that just like the idea that the Earth is flat, so too, the notion that  human beings come in different kinds that can be labeled as “races” is just plain scientifically wrong.

As the anthropologist Jonathan Marks at the University of North Carolina – Charlotte and many others, too, have been saying for years, human genetic variation around the globe is real. But the same cannot be said for the commonsense claim that the Earth is peopled by separate and distinct human races.

As Marks has observed on numerous occasions, when we try to divide people up into different races, it’s not that we’re reading natural patterns of variation and simply extracting this idea from nature. Instead,

what we’re doing is we’re deciding that certain patterns of variation are less important than others, and certain patterns of variation are more important than others. We decide that the difference between a Norwegian and an Italian is not significant and so we’ll place them in the same category. And we decide that the difference between a Persian and a Somali is important; and so we’ll place them in different categories.

Sinner heal thyself

It is probably true that most human geneticists nowadays recognize that human beings don’t come in kinds—that is, races aren’t real. It is more than unfortunate, therefore, that geneticists today generally still don’t seem to know how to talk about human biological variation from place to place and down through time without using words—the term “population,” for example—that all too easily can mislead others less knowledgeable into believing science still endorses the old commonsense idea that human races exist in the real world to be embraced or savaged depending on one’s personal and moral proclivities.

No wonder, therefore, that dictionary definitions of racism (such as the one at the top of this commentary) can still make it sound like there is nothing wrong with the idea of race provided we don’t use this notion as an excuse for prejudice, discrimination, or antagonism.

The way forward

Most of us don’t believe the Earth is flat. Yet most of us live and act as if it were because this commonsense idea is a seemingly trivial lie that mostly works just fine in everyday life. Similarly, most of us may feel comfortable using the word race for the same reason. Truth be told, however, most of us also know the consequences of doing so can be deadly. Is there a way forward?

Here are 5 recommendations. They have been written specifically with geneticists in mind. But you don’t have to be a professional geneticist to add them to your own personal stock of “best practices.”

  1. Avoid whenever possible using facile concepts and terms such as ancestry, migration, and admixture when writing about human diversity.
  2. Abandon using the outdated concept of a “population,” and replace it with the statistician’s term “sample.”
  3. Stop writing about the “population structure” of this or that species, and instead report on their “genetic structure” as a species.
  4. Develop comparative databases documenting the genetic structure of other species to demonstrate publicly and repeatedly until the truth finally sinks in that geographic variation doesn’t have to be “racial” to be real.
  5. Create mathematical tools and network algorithms to use when mapping, analyzing, and reporting on the genetic structure of a species that unlike current methods (e.g., the popular computer program Structure) are non-categorical.

Coming soon: Tinker Tailor Soldier Ego Part 1: Freud is dead

John Edward Terrell and Gabriel Stowe Terrell


 EXPLORING THE LOST WORLD  ____________________________ _____________________________________  OF THE HUMAN BRAIN

FIRST THING WE NEED TO NOTE is that Freud is dead. No, we don’t mean the famous 20th century psychologist Sigmund Freud who died in 1939 at the beginning of World War II after struggling for years with cancer (Freud didn’t listen to his doctors, and he really, really liked to smoke cigars). We mean Freud’s way of thinking about how the brain works with the world popularly called Freudian psychoanalysis—although, yes, not every psychologist practicing today would agree with us that Freudian thinking is totally dead and buried.

Source: https://commons.wikimedia.org/wiki/File:Sigmund_Freud_LIFE.jpg

The psychologist and Nobel Laureate Eric Kandel observed in an insightful overview published 1999 that this remarkable man revolutionized our understanding of the human mind during the first half of the 20th century. Unfortunately, as Kandel goes on to say, during the second half of the last century Freudian psychoanalysis did not evolve scientifically. It did not develop objective methods for testing Freud’s excitingly original ideas. As a consequence, Kandel gloomily concluded in his benchmark essay, psychoanalysis entered the 21st century with its influence in decline.

With the passing of psychoanalysis as an instructive way of thinking about how your mind works, nothing comparable in its scope and helpfulness has taken its place, leaving most of us today without a workable framework for understanding ourselves and why we do what we do. As Kandel concluded in 1999: “This decline is regrettable, since psychoanalysis still represents the most coherent and intellectually satisfying view of the mind.”

More to come . . .

Do men and women think differently?

Marc Kissel


Please note: this commentary, recovered on 28-Jan-2017, was originally published in Science Dialogues on 3-August-2014.


Years ago I mentioned to a group of female friends that I didn’t think men and women were really that different (well, besides the obvious ones). This caused quite the kerfuffle and led to the conclusion that I was an idiot. Yet, while it seems self-evident that men & women think differently this doesn’t mean that it is true . After all, it wasn’t too long ago were it was “obvious” that race was biology, that the sun circled the earth, and that jorts were a good idea.

A paper published last January caused quite the hubbub when it claimed to find significant differences between male and female brains (Ingalhalikar et al. 2014). Not tested in the paper, however, was whether those differences were cultural (in fact, the differences between sexes increased as the age of the children studied increased, which may suggest that something other than biology was at play).  A new study by Daniela Weber and colleagues (2014) investigates the role cultural factors may play in these apparent differences. They do so by examining cognitive task results from surveys of “nonindustrialized” men & women over 50 living in Europe, merging 13 countries into three regional groups and then comparing within and between these populations. The main results are shown in Figure 1.

Figure 1. Source: Webster et al. 2014.

For episodic memory (how well someone recalls a list of previously read words), women in Northern Europe have a higher average score than men, but the situation is more complex in other regions. Results differed in numeracy & category fluency categories based upon region as well. If you thought male/female difference were hard-wired, this shouldn’t be the case.

What causes these geographic differences? The Nick Wade’s of the world would probably suggest genetic differences are at the heart of the matter, but that does not seem to be the case. Instead access to education, along with other social factors, may be at the root of much of this.

Figure 2. Source: Webster et al. 2014.

This isn’t the clearest of figures. On the Y-axis is the average level of education for women minus that of men. When the number is negative, men on average spend a longer time in school than women do. On the X-Axis, is women’s cognitive performance minus men’s cognitive performance. I added colored lines at ‘0’ for each axis. Points to the right of the red line represent cohorts where women outperform men, while points above the blue line are when women have higher levels of education than men. As can be seen, in almost all cases men have reached higher education levels. It is interesting that, for episodic memory, as the mean years of differences in education years decreases, the difference between the sexes also decreases. Or as they put it: “These findings suggest that if women and men had equal levels of education, we should expect a female advantage in episodic memory, a male advantage in numeracy, and no gender differences in category fluency” (Weber et al. 2014:3).

In other words, reducing differences in access to education should lessen the differences in test scores.  Trying to discover sex-based differences without acknowledging the role cultural plays is always going to cause anthropologists to be wary so it is nice to see this acknowledged. As noted in the paper, there are many confounding variables that cannot be tested here and it is difficult to rule out  decline in mental acumen due to age-related cognitive decline. Further, I wonder about the geographic populations they define. What patterns would emerge if you didn’t group the 13 countries together in the same way as is done in this paper? Also interesting, though not really discussed, is that Northern Europeans (here represented by Denmark & Sweden) did better on all the cognitive assessments.

But it is always nice to see approaches that note that differences may be cultural rather than biological. Oh, and don’t get me  started on the blue = boys and girls =  pink nonsense.

References

Ingalhalikar, Madhura, et al. “Sex differences in the structural connectome of the human brain.” Proceedings of the National Academy of Sciences 111.2 (2014): 823-828.

Weber, Daniela, et al. “The changing face of cognitive gender differences in Europe.” Proceedings of the National Academy of Sciences (2014): 201319538.

Marc Kissel (Ph.D, University of Wisconsin-Madison) is a native New Yorker transplanted into the wilds of the Midwest. His dissertation examined genetic models that try to explain why humans are so inbred compared to the living apes and asks if these models conform to anthropological reality (spoiler alert: they don’t!). He is interested in human evolution and likes to apply mathematical models, genetic data, and anthropology to questions about our evolutionary history (especially Neandertals). Currently he is a postdoc at Notre Dame studying the evolution of wisdom. You can find him him on Twitter @MarcKissel
© 2014 Marc Kissel. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. The statements and opinions expressed are those of the author(s) and do not constitute official statements or positions of the Editors and others associated with SCIENCE DIALOGUES.

In the works: Mating, variation, and speciation: An interdisciplinary conversation

Source: https://commons.wikimedia.org/wiki/File:Limenitis_archippus_mating_2.jpg

While using network theory and visualization techniques to map the genetic structure of species in space and time is in its infancy, reconfiguring how science grapples with the inherent complexity of evolution as an ever unfolding process using network approaches has the promise of making it easier to explore how comparable or dissimilar species are in their strategies for survival and reproduction. Looking long and hard at what other species do to survive and reproduce may also make it easier for all of us to see just how toxic our own social strategies—and the assumptions supporting them—can be.

Logical seduction and historical delusion

John Edward Terrell


Please note: this commentary, recovered on 9-Jan-2017, was originally published in Science Dialogues on 20-Feb-2015.


In his acclaimed novel The Oxford Murders, the Argentinean writer and mathematician Guillermo Martínez engagingly shows how easy it is to hide the truth from others by getting them to think that a series of similar events—in this instance, a series of murders—is happening because, when taken in sequence, they appear to add up to a coded message that we are being taunted to decipher.

Judging by appearances, each murder apparently symbolizes one of the logical steps in a predictable sequence, just as most of us would probably agree that the next logical number in the familiar series 2, 4, 8, and 16 must be the multiple 32.  Perhaps, but as the philosopher Ludwig Wittgenstein famously observed, any finite sequence of numbers can be continued in a variety of different ways, not just in the one way that may seem reasonable (Biletzki and Matar 2006).

For example, the narrator, whose name we are never told, is asked early in this novel if he can figure out what is the next symbol in the odd series reproduced here as Fig. 1a.

Figure 1.
Figure 1. Alternative possible solutions
to Martínez’s cryptic symbol series.

Although Martínez never shows us the solution he has in mind (the narrator merely tells us later on that the answer is the number series 1, 2, 3, 4), we suspect those who find riddles like this one appealing are likely to say the solution shown in Fig. 1b is the right resolve:  an answer derived from the rules of symmetry (Fig. 1c). Yet in keeping with Martínez’s revealing observations about both logic and magic set here and there in this story, what if the proper solution is not so playful?

For example, what if the three symbols already revealed follow instead the alternative rule that one stroke equals 1?  If this were so, then the missing fourth symbol in this cryptic series would not be an “M” with a bar drawn horizontally through it (in keeping with our different rule, this strange symbol could stand instead for the number 5), but disconcertingly could be drawn either as a single stroke (Fig. 1d), or possibly as an inscribed circle, the letter “O,” or a zero (Fig. 1e).

Doubt as to the proper resolve of Martínez’s series of symbols illustrates Wittgenstein’s cryptic and oft-quoted remark:  “This was our paradox:  no course of action could be determined by a rule, because every course of action can be made out to accord with the rule. The answer was:  if everything can be made out to accord with the rule, then it can also be made out to conflict with it. And so there would be neither accord nor conflict” (quoted in:  Biletzki and Matar 2006).

I am not a philosopher, nor a novelist.  It seems to me, however, that Martinez’s tale and Wittgenstein’s remark both tell us something about ourselves, about how we are given to looking for similarities among things and events proving that what we are seeing makes sense not by chance but necessity.  It might even be argued that human beings are strongly predisposed to equate similarity with necessity.

This is why we need statisticians, however much statistics may sometimes seem only a cultivated way of lying for effect.  They keep us from foolishly jumping to the conclusion that similarities in appearance or similarities in effect are necessarily similarities of cause.

And in this regard, we need to remember that when statisticians say that something should be attributed to “chance,” they do not mean “without cause.”  Far from it:  the point they are making is that the cause (or causes) is not necessarily the one we think it is.

Note: These observations were originally published as the introduction in my chapter "Return to the entangled bank: Deciphering the Lapita cultural series" in Sheppard, P. J., Thomas, T., and Summerhayes, G. R., eds., Lapita: Ancestors and Descendants, pages 255-269. Monograph 28. New Zealand Archaeological Association, Auckland, 2009.
Reference

Biletzki, Anat and Matar, Anat, “Ludwig Wittgenstein”, The Stanford Encyclopedia of Philosophy (Spring 2014 Edition), Edward N. Zalta (ed.), URL = <http://plato.stanford.edu/archives/spr2014/entries/wittgenstein/>.


BW-JET

John Edward Terrell is Regenstein Curator of Pacific Anthropology at The Field Museum, Chicago, IL 60605. His latest book A Talent for Friendship: Rediscovery of a Remarkable Trait was published on December 1, 2014 by Oxford University Press. Email address: terrell[at]fieldmuseum.org

© 2015 John Edward Terrell. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. The statements and opinions expressed are those of the author(s) and do not constitute official statements or positions of the Editors and others associated with SCIENCE DIALOGUES.

 

Thinking about thinking 4. Our social baseline

John Edward Terrell and Gabriel Stowe Terrell


Please note: this commentary, recovered on 9-Jan-2017, was originally published in Science Dialogues on 16-April-2015.


http://www.alice-in-wonderland.net/pictures/tweedledee-tweedledum-pictures.html

“The first thing in a visit is to say ‘How d’ye do?’ and shake hands!” And here the two brothers gave each other a hug, and then they held out the two hands that were free, to shake hands with her.

Alice did not like shaking hands with either of them first, for fear of hurting the other one’s feelings; so, as the best way out of the difficulty, she took hold of both hands at once . . .

Through the Looking-Glass by Lewis Carroll, 1871

AT THE HANDS OF SOMEONE like William Shakespeare or Virginia Woolf, humans may come off sounding complex, cantankerous, and downright mean at times, but often and also kind, noble, loving, and at least momentarily wise and intelligent. On the other hand, portrayals of our species in the reckonings of science are often far more one-sided and two-dimensional. Thus according to the zoologist Edward O. Wilson (2012) we are a tribal eusocial  species committed to killing outsiders for the good of our home group. The evolutionary psychologist Steven Pinker (2011a) maintains that we all have in effect if not in fact violent demons lurking within us that must be tamed by reason, compassion, and good governance. The social scientists Samuel Bowles and Herbert Gintis (2011) have expressed a more favorable view of human nature, but again like Wilson and Pinker, they have described our willingness to cooperate with one another as an evolutionary mystery in need of resolution given that humans are selfish at heart and can be self-serving in their motivations.

The most parsimonious proximal explanation of cooperation, one that is supported by extensive experimental and other evidence, is that people gain pleasure from or feel morally obligated to cooperate with like-minded people. People also enjoy punishing those who exploit the cooperation of others, or feel morally obligated to do so. (Bowles and Gintis 2011: 3)
Dubious assumptions

There are two major assumptions at the ground level of most current scientific analyses of human nature. The first is that selfishness is one of the prime movers of biological evolution. The second is the claim that human cooperation is based on reason, shame, and good gamesmanship. “The most important psychological contributor to the decline of violence over the long term may instead be reason: the cognitive faculties, honed by the exchange of ideas through language, that allow us to understand the world and negotiate social arrangements” (Pinker 2011b: 310). Both of these assumptions are questionable.

Neo-Darwinian determination

The fundamentals of evolutionary thinking as a way of explaining what we are seeing in the world of today and in the past have changed over time since Darwin’s day (Amundson 2014). Tom Clark has shown in his series of commentaries at SCIENCE DIALOGUES on Darwin’s use of “use and disuse” that during the latter half of the 20th century, the neo-Darwinian assumption that genes and environments were sufficient causes of observed behavior “turned natural selection from an animate doing into a physical happening. Attributing behavior to stable causes both inside (molecules) and outside (environment) turned animals into spectators, along for the ride.”

Clark underscores that how we tell our story of what it means to be human and how we have evolved to be the sort of animal we are directly leverages or constrains how well we handle our individual and collective impacts on the earth and our fellow human beings.

As Michael Ruse (2014) has observed, today natural selection is the mechanism seen by most experts on evolution as the chief reason  for organic change. It is perplexing, however, that when it comes to our species, attempts to explain our general willingness to cooperate with one another often take it as self-evident that selfishness, infra-specific competition, and gamesmanship (Potter 1947; Rand et al. 2013) rule the day even when we seem to be acting in kind, considerate, and evidently caring ways towards others (Terrell 2015: 111–117).

Such scientific cynicism may make perfect sense given the ruling assumptions of neo-Darwinian theory today, but the picture looks quite different if it isn’t accepted from the get-go that selfishness has to be a part of every permissible Darwinian explanation for life’s diversity and history on earth.

Social baseline theory

The psychologists Lane Beckes and his colleague James Coan are studying empathy and cooperation based on a radically different view of what it means to be human, a research tactic they call social baseline theory (Beckes and Coan 2011). Their working assumption is one that many would accept with little disagreement: being a social animal gives any species a genuine and practical advantage in the Darwinian struggle for survival and reproduction. And for humans at least, having the capacity to live and work closely with others also gives us a social baseline of emotional support and security. So much so, they say, that our social ties with other people are in effect an extension of the way the human brain interacts with the world. As a consequence, when we are around others we know and trust, we can let down our guard and relax.

From this perspective, the experienced payoffs are more than emotional. When we thus feel safe and secure, we are literally able to devote less energy—and we would add, less time—to staying alert for possible threats and uncertainties. Indeed, they have argued that the human brain has evolved to assume the presence of other people. In their words: “In our view, the human brain is designed to assume that it is embedded within a relatively predictable social network characterized by familiarity, joint attention, shared goals, and interdependence.”

On the other side of the mirror

Beckes and Coan have said a major saving grace of human sociality is the energetic cost benefit of not having to be the only one looking out for number one (Beckes and Coan 2011; Coan and  Maresh 2014; Coan and Sbarra 2015). While we would grant that there may be be such a cost benefit, we are uncertain how decisive this savings has been in shaping human evolution. After all, the probability of survival is determined not only by how much effort you have to put into the struggle. It can be argued that we are such strongly social animals for other reasons, too. First, we critically depend on social learning to know how to survive in the first place. Second, many of us—but admittedly not all—are predisposed socially and emotionally to be caregivers because our offspring wouldn’t survive the first years of their lives if we weren’t (Terrell 2015: 190–191).

To survive and reproduce, organisms must take in more energy than they expend, a principle of behavioral ecology called economy of action. Social baseline theory (SBT), a framework based on this principle, organizes decades of observed links between social relationships, health, and well-being, in order to understand how humans utilize each other as resources to optimize individual energy expenditures. (Coan and Maresh 2014: 221).

Furthermore, there is the matter of time. It may be true that time is money, but we humans are pretty good at wasting time for apparently no good reason, energetic or otherwise. And certainly there is no denying that when we feel safe and secure, many of us are willing to invest both time and energy in seemingly unproductive ways.

Consider, for example, the metabolic cost of the continuing mental activity in what has been dubbed the brain’s default mode network (DMN) when we are not task-engaged. The reward of not having to attend closely to the practicalities of the world around us when we feel safely embedded in nurturing social networks may be the excitement Alice must have felt in Lewis Carroll’s story after she had slipped through the looking-glass to explore the hidden wonders to be found therein (although judging by his singular account, Alice evidently did not find doing so as addictive as some today find the similar cognitive experience of playing online computer games). Just as those incarcerated in our penal system may be given time off for good behavior, so too, sharing the demands and burdens of life with others gives us time off to play with whatever takes our fancy on that landscape between our ears.

Previously in this series:
"Thinking about thinking 1. Cognitive niche construction"
"Thinking about thinking 2. Through the looking-glass"
"Thinking about thinking 3. Free will"
References

Amundson,  Ron (2014). Charles Darwin’s reputation: How it changed during the twentieth-century and how it may change again. Endeavour 38: 257–267.

Beckes, Lane and James A. Coan (2011).  Social baseline theory: The role of social proximity in emotion and economy of action.  Social and Personality Psychology Compass 5: 976–988.

Bowles, Samuel and Herbert Gintis (2011). A Cooperative Species: Human Reciprocity and Its Evolution. Princeton: Princeton University Press.

Coan, James A. and Erin L. Maresh (2014). Social baseline theory and the social regulation of emotion, pages 221–236. In J. Gross, ed., The Handbook of Emotion Regulation, 2nd. ed., pp. 221–236. New York: Guilford Press.

Coan, James A. and David A. Sbarra (2015). Social baseline theory: The social regulation of risk and effort. Current Opinion in Psychology   1: 87–91.

Pinker, Steven (2011a). The Better Angels of Our Nature: The Decline of Violence in History and its Causes. New York: Viking.

Pinker, Steven (2011b). Taming the devil within us. Nature  478: 309–311,

Potter, Stephen (1947). Theory and Practice of Gamesmanship. New York: Henry Holt & Company.

Rand, David G., Corina E. Tarnita, Hisashi Ohtsuki, and Martin A. Nowak (2013). Evolution of fairness in the one-shot anonymous Ultimatum Game.  Proceedings of the National Academy of Sciences U.S.A. 110:  2581–2586.

Ruse, Michael (2014). Was there a Darwinian revolution? Yes, no, and maybe! Endeavour 38: 159–168.

Terrell, John Edward (2015). A Talent for Friendship: Rediscovery of a Remarkable Trait. Oxford and New York: Oxford University Press.

Wilson, Edward O. (2012). The Social Conquest of the Earth. New York: Liveright (a division of W. W. Norton).


John Edward Terrell is Regenstein Curator of Pacific Anthropology at The Field Museum, Chicago, IL 60605. His latest book A Talent for Friendship: Rediscovery of a Remarkable Trait was published on December 1, 2014 by Oxford University Press. Email address: terrell[at]fieldmuseum.org

Gabriel Stowe Terrell is a freelance writer living in Madison, Wisconsin.

 

 

 

© 2015 John Edward Terrell and Gabriel Stowe Terrell. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. The statements and opinions expressed are those of the author(s) and do not constitute official statements or positions of the Editors and others associated with SCIENCE DIALOGUES.

Thinking about thinking 3. Free will

John Edward Terrell and Gabriel Stowe Terrell


Please note: this commentary, recovered on 9-Jan-2017, was originally published in Science Dialogues on 24-March-2015.


http://commons.wikimedia.org/wiki/File:Alice_par_John_Tenniel_16.png

THE BEHAVIORIST B. F. SKINNER was famously opposed to “mentalistic explanations” for human behavior. By this he meant attributing to the world of the mind an active “top-down” role (Baumeister and Miller 2014) in determining what we think, say, and do. In his eyes, trying to explain our overt behavior by appealing to inner states of mind, feelings, and other elements of an “autonomous man” inside our skulls was utterly foolish, unscientific, and a waste of time. “The ease with which mentalistic explanations can be invented on the spot is perhaps the best gauge of how little attention we should pay to them” (Skinner 1971: 160).

Instead, according to Skinner, the “task of a scientific analysis is to explain how the behavior of a person as a physical system is related to the conditions under which the human species evolved and the conditions under which the individual lives” (1971: 14). As distasteful as some might find such a realization, “the fact remains that it is the environment which acts upon the perceiving person, not the perceiving person who acts upon the environment” (1971: 188).

Even Skinner was willing to concede the “indisputable fact of privacy.” Nonetheless he stuck to his staunch environmentalism. “It is always the environment which builds the behavior with which problems are solved, even when the problems are to be found in the private world inside the skin” (1971: 194).

In a scathing review of Skinner’s 1971 book Beyond Freedom and Dignity, the linguist Noam Chomsky thoroughly rejected Skinner’s scientific claims. “His speculations are devoid of scientific content and do not even hint at general outlines of a possible science of human behavior. Furthermore, Skinner imposes certain arbitrary limitations on scientific research which virtually guarantee continued failure” (Chomsky 1971).

Unfortunately Chomsky’s spirited defense of human freedom and dignity against Skinner’s denial of both offered few concrete hints on why we are not the automatons Skinner said we are. But how are we not controlled by the world around us and by all that life deals us, both painful and pleasurable? How and how much does Skinner’s nemesis “autonomous man” have any real say in what we think, feel, and do? Chomsky left these critical issues unexplored and undocumented.

The mind-body problem

The philosopher Jerry Fodor noted in 1980 that traditional philosophies of mind can be divided into two sorts: dualist theories and materialist theories. “In the dualist approach the mind is a nonphysical substance. In materialist theories the mental is not distinct from the physical; indeed, all mental states, properties, processes and operations are in principle identical with physical states, properties, processes and operations” (Fodor 1980: 114). Since then cognitive psychologists and experts in neuroscience imaging have come down more or less firmly on the side of materialist theories, although exactly how the neurological hardware and software called the brain processes information and arrives at conclusions remains more an educated guess than a demonstrated reality.

Awkwardly what has traditionally been called the “mind-body problem” has often been seen in both science and philosophy as a conundrum about the consciousness of our thoughts and decisions. Yet as Max Velmans (2008) has observed, “it is now clear that ‘mind’ is not quite the same thing as ‘consciousness,’ and that the aspect of body most closely involved with consciousness is the brain. It is also clear that there is not one consciousness–brain problem, but many.” In other words, reading “mind and body” to mean “consciousness and brain tissue” is far too restrictive, too limiting.

Recently Ralph Adolphs (2015) at the California Institute of Technology surveyed what we do and don’t know about consciousness as a mental phenomenon and finds that there is little agreement about what it is and how it works. He helpfully divides the unsolved problems in neuroscience into four basic categories ranging from those that are now solved or will soon be to those that may never be decided. Discouragingly, he puts three key issues in the latter category. (1) How does the human brain compute? (2) How can cognition be so flexible and generative? (3) How and why does conscious experience arise?

His final conclusion is equally sobering. “In a nutshell, then, the biggest unsolved problem is how the brain generates the mind, conceived of in a way that does not simultaneously require answering the problem of consciousness.” However, on a more promising note, he adopts the framework proposed by David Marr (1982) to suggest that memory at least can be understood as the “ability to predict the future by learning.”

This comment is worth emphasizing. Unlike old Father William in Lewis Carroll’s famous poem who elected to stand on his head again and again after learning he had no brain, we see the design and decision-making that are both so fundamental to human niche construction as tangible proof that the human brain is capable of stimulus-independent, self-directed thought (Bonn 2013)—a roundabout way of saying that like Father William, the cognitive manipulations and innovations happening in our minds can lead to top-down, not just bottom-up causation (Foulkes and Domhoff 2014).

Evidence favoring this admittedly far from surprising conclusion can be seen readily enough in what happens on the landscape between our ears during that mysterious cognitive activity called dreaming.

Dreams and dreaming
Sir John Tenniel’s hand-colored proof of Cheshire Cat in the Tree Above Alice for The Nursery “Alice”, ca. 1889. http://commons.wikimedia.org/wiki/File:Tennel_Cheshire_proof.png

It is an enduring folk belief that we live our lives on-again off-again in dichotomous ways. We are either happy or sad, awake or asleep, conscious or unconscious, rational or emotional, and so on.

Cognitive psychology today, however, is discovering that a great deal that is happening in the brain instrumental to our survival, success, and emotional well-being is (1) largely disengaged from our conscious awareness of what’s going on both inside and outside us (e.g., Mudrik et al. 2014; Soto and Silvanto 2014), and is (2) more dependent on our feelings and emotions than conventionally seen (e.g., Inzlicht et al. 2015).

Dreaming, like consciousness, is one of those arenas of mental life about which much has been written and yet much remains to be understood (Domhoff and Fox 2015). Here we offer two observations. First, dreaming is more a top-down brain activity than generally envisioned (Foulkes and Domhoff 2014). Second, nobody who has ever recalled a dream needs to be told by anyone else that our brains are capable of creating often credible but truly off-the-wall situations, scenarios, and storied experiences that may not only have lingering emotional impact long after awakening, but can also be a source of great inspiration and creative insight. In short, cognitive niche construction does not need to be either conscious or wakeful.

Free will

Saying you know for sure what free will is or isn’t has long been a reliable way of provoking debate (Monroe et al. 2014). Nonetheless, here are three claims based on what we have been discussing thus far in this SCIENCE DIALOGUES series. First, human beings can think about things and actions—past, present, or future—without being aware that they are doing so (Bonn 2013). Second, human beings can act in accord with the worlds they construct for themselves in their Leslie minds. Third, free will does not have to be rational if by rational we mean “makes sense” in terms of the external world and the laws of physics, etc. Cognitive niche construction may begin with our own experiences of the world, but it does not have to end there. And as we shall discuss in later commentaries in this series, therein lies a problem.

Forthcoming in this series: "Thinking about thinking 4. Our social baseline."
Previously in this series: 
"Thinking about thinking 1. Cognitive niche construction"
"Thinking about thinking 2. Through the looking-glass"
References

Adolphs, Ralph (2015). The unsolved problems of neuroscience. Trends in Cognitive Science, in press.

Buschman, Timothy J. and Earl K. Miller (2014). Goal-direction and top-down control. Philosophical Transactions of the Royal Society B: Biological Sciences 369: 20130471 http://dx.doi.org/10.1098/rstb.2013.0471.

Bonn, Gregory B. (2013). Re-conceptualizing free will for the 21st century: Acting independently with a limited role for consciousness. Frontiers in Psychology 4: 920. doi: 10.3389/fpsyg.2013.00920

Chomsky, N. (1971). The case against B. F. Skinner. The New York Review of Books 17: 18-24.

Domhoff, G. William and Kieran C. R. Fox (2015). Dreaming and the default network: A review, synthesis, and counterintuitive research proposal. Consciousness and Cognition 33: 342–353.

Fodor, Jerry (1880). The mind-body problem. Scientific American244/1: 114–123.

Foulkes, David and G. William Domhoff (2014). Bottom-up or top-down in dream neuroscience? A top-down critique of two bottom-up studies. Consciousness and Cognition 27: 168–171.

Inzlicht, Michael, Bruce D. Bartholow, and Jacob B. Hirsh (2015). Emotional foundations of cognitive control. Trends in CognitiveScience 19: 126–132.

Marr, David (1982). 9 Marr, D. (1982) Vision: A Computational Investigation into the Human Representation and Processing of Visual Information. San Francisco: W. H. Freeman.

Monroe, A. E., Dillon, K. D., and Malle, B. F. (2104). Bringing free will down to earth: People’s psychological concept of free will and its role in moral judgment. Consciousness and Cognition 27: 100–108.

Mudrik, Liad, Nathan Faivre, and Christof Koch (2014). Information integration without awareness. Trends in Cognitive Sciences 18: 488–496.

Skinner, B. F. (1971). Beyond Freedom and Dignity. New York: Alfred A. Knopf, 1972.

Soto, David and Juha Silvanto (2014). Reappraising the relationship between working memory and conscious awareness. Trends in Cognitive Sciences 18: 520–525.

Velmans, Max (2008). How to separate conceptual issues from empirical ones in the study of consciousness. In R. Banerjee and B. K. Chakrabarti (eds.), Models of Brain and Mind: Physical, Computational and Psychological Approaches 168: 1–9.

Acknowledgements

We thank Tom Clark and Kevin Kelly for their comments and suggestions for improvement.

John Edward Terrell is Regenstein Curator of Pacific Anthropology at The Field Museum, Chicago, IL 60605. His latest book A Talent for Friendship: Rediscovery of a Remarkable Trait was published on December 1, 2014 by Oxford University Press. Email address: terrell[at]fieldmuseum.org

Gabriel Stowe Terrell is a free-lance writer living in Madison, Wisconsin.

 

 

 

© 2015 John Edward Terrell and Gabriel Stowe Terrell. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. The statements and opinions expressed are those of the author(s) and do not constitute official statements or positions of the Editors and others associated with SCIENCE DIALOGUES.

Thinking about thinking 2. Through the looking-glass

 John Edward Terrell and Gabriel Stowe Terrell

Please note: this commentary, recovered on 9-Jan-2017, was originally published in Science Dialogues on 5-March-2015.


Source: http://www.alice-in-wonderland.net/

“Oh, Kitty! how nice it would be if we could only get through into Looking-glass House! I’m sure it’s got, oh! such beautiful things in it! Let’s pretend there’s a way of getting through into it, somehow, Kitty. Let’s pretend the glass has got all soft like gauze, so that we can get through. Why, it’s turning into a sort of mist now, I declare! It’ll be easy enough to get through—” She was up on the chimney-piece while she said this, though she hardly knew how she had got there. And certainly the glass was beginning to melt away, just like a bright silvery mist.

Through the Looking-Glass by Lewis Carroll, 1871

 ALICE’S ADVENTURES IN WONDERLAND (first published in 1865) is Lewis Carroll’s most beloved book thanks in part to Walt Disney Studios and its 1951 cartoon version that  beautifully captured the logical nonsense of Carroll’s rich fantasy world of talking rabbits, smiling cats, and unlikely occurrences. The Disney cartoon, however, also incorporated a few of the characters and events from Carroll’s sequel Through the Looking-Glass and What Alice Found there (1871).

While both books exhibit his brilliance at cognitive niche construction, Carroll’s framing his second story around the otherworldly semblance of reality seen in a looking-glass may have been inspired by his own reflections on the elusiveness of human thought. He was a mathematician first and foremost. He knew well that however much our thoughts may mirror the world around us and what we experience from the cradle to the grave, each of us lives in a cognitive world populated by our own private thoughts on the “other side of the looking-glass”—a world that, unlike Alice, others cannot enter and explore.

The human conundrum

There is nothing surprising about saying we can draw a line between our public lives and our private thoughts. Look into the eyes of any dog. There is also nothing remarkable about saying  we are evidently not the only species capable of entertaining private thoughts and passions. As one of us has explored more fully elsewhere (Terrell 2015), our evolved human capacity to engage in cognitive niche construction—however remarkable or shared with at least some other species—brings with it costs as well as benefits. Socially we have evolved as a species to both want and need human contact and engagement. Yet during the evolution of our huge human brain we achieved a level of private cognition that enables us to disengage from the world around us. Hence as a species we are confronted with a conundrum.  We are social creatures with private thoughts “on the other side of the mirror” that can isolate us from others.

THE DYNAMIC INTERPLAY OF HUMAN EVOLUTION
Over the course of human evolution there has been a dynamic interplay between our mental & physical abilities, our brains, our social behavior, and our cleverness at niche construction that has also nurtured our skillfulness as a species at cognitive niche construction.
Lou, Laurence, and Leslie

Modeling how our minds work has taken many twists and turns over the course of human history. Some of the more extreme recent interpretations have insisted either that the brain is massively modular in its aptitudes (Steven Pinker and other evolutionary psychologists), or alternatively is passively shaped, or sculpted, by our interactions with the world around us (classical 20th century stimulus-response psychology).

At this stage in our investigations, we prefer to remain agnostic about how the brain’s circuitry gives us the capacity for thinking as seen in all its many dimensions, public and private (Adolphs 2015; Lamme 2006). In keeping with Daniel Kahneman’s (2011) wisdom to use such things as tools for thought rather than as literal descriptions of our cerebral hardware, we find it useful to characterize how we think about things and events in three different ways using the labels LouLaurence, and Leslie (for discussion, see: Terrell 2015: chapter 4):

  • Lou (also known as System 1 or Type 1)—thinking that is unconscious, automatic, quick, perhaps emotional, and easy to do; in short, information processing in the brain done mostly without conscious awareness; a type of thinking that may be evolutionarily old and is probably also within the mental capabilities of other animal species; the realm of our habitual selves.
  • Laurence (called System 2 or Type 2)—thinking that is conscious, slow, takes effort, and is purposeful; usually said to be involved in “higher-order” cognitive processes such as logical reasoning and decision-making; may or may not be unique to our species; the realm of intentional environmental niche construction.
  • Leslie—thinking that is contemplative, abstract, may be counterfactual, and is largely detached from an individual’s immediate realities; may or may not be unique to our species; the realm of cognitive niche construction
THE VISTA ON THE OTHER SIDE OF THE LOOKING-GLASS IN LEWIS CARROLL’S COGNITIVE WORLD WAS CURIOUSLY CARTESIAN! “For some minutes Alice stood without speaking, looking out in all directions over the country—and a most curious country it was. There were a number of tiny little brooks running straight across it from side to side, and the ground between was divided up into squares by a number of little green hedges, that reached from brook to brook.” http://upload.wikimedia.org/wikipedia/commons/a/a1/Curious_country.jpg
Self-generated thought

As Jessica Andrews-Hanna and her colleagues observed recently, understanding the mechanisms underlying self-generated thought and its adaptive and maladaptive functional outcomes has been a key aim of cognitive science in recent years (Andrews-Hanna et al. 2014: 29). In their estimation, far from being a passive brain phenomenon, for example, the default mode network (DMN) within our skulls contributes to several active forms of internally driven cognition. As she and her colleagues have written:

Tasks that activate the network often require participants to retrieve episodic, autobiographical, or semantic information, think about or plan aspects of their personal future, imagine  novel scenes, infer the mental states of other people, reason about moral dilemmas or other scenarios, comprehend narratives, self-reflect, reference information to one’s self, appraise or reappraise emotional information, and so on. (Andrews-Hanna et al. 2014: 32)

Although much remains to be learned about the costs and benefits of self-generated thought—which has also been dubbed stimulus-independent thought, spontaneous thought, internally-directed thought, and mind-wandering—it is becoming increasingly clear that the default and executive networks in the brain are not inherently working in opposition.

Kalina Christoff and her colleagues, as a case in point, have argued that both networks can work in parallel in ways that are reminiscent of the neural recruitment observed during creative thinking before solving problems with insight. Furthermore, “similar parallel recruitment of executive and default regions has also been observed during naturalistic film viewing, which is related to immersive simulative mental experience” (Christoff et al. 2009: 8723).

What we find both intriguing and frustrating  is that many researchers studying self-generated thought, with notable exceptions (Killingsworth and Gilbert 2010), seem committed to the view that internally-directed thought lies within the reach of human cognition because even when it appears to be getting us away from what we really ought to be doing to survive and make a living, mind-wandering may nonetheless “enable the parallel operation of diverse brain areas in the service of distal goals that extend beyond the current task” (Christoff et al. 2009: 8723).

Perhaps, but not necessarily so, as we shall discuss in the next commentary in this series.


Previously in this series: “Thinking about thinking 1: Cognitive niche construction”  Next in this series“Thinking about thinking 3. Free will”


References

Adolphs, Ralph (2015). The unsolved problems of neuroscience. Trends in Cognitive Sciences, in press.  http://dx.doi.org/10.1016/j.tics.2015.01.007

Andrews‐Hanna, Jessica R., Jonathan Smallwood, and R. Nathan Spreng (2014). The default network and self‐generated thought: Component processes, dynamic control, and clinical relevance. Annals of the New York Academy of Sciences 1316: 29–52.

Christoff, Kalina, Alan M. Gordon, Jonathan Smallwood, Rachelle Smith, and Jonathan W. Schooler (2009). Experience sampling during fMRI reveals default network and executive system contributions to mind wandering. Proc. Natl. Acad. Sci. U.S.A. 106: 8719–8724.

Kahneman, Daniel (2011). Thinking: Fast and Slow. New York: Farrar, Straus and Giroux.

Killingsworth, Matthew A., and Daniel T. Gilbert (2010). A wandering mind Is an unhappy mind. Science 330: 932.

Lamme, Victor A. F. (2006). Towards a true neural stance on
consciousness. Trends in Cognitive Sciences 10: 494–501.

Terrell, John Edward (2015). A Talent for Friendship: Rediscovery of a Remarkable Trait. Oxford and New York: Oxford University Press.


John Edward Terrell is Regenstein Curator of Pacific Anthropology at The Field Museum, Chicago, IL 60605. His latest book A Talent for Friendship: Rediscovery of a Remarkable Trait was published on December 1, 2014 by Oxford University Press. Email address: terrell[at]fieldmuseum.org

Gabriel Stowe Terrell is a freelance writer living in Madison, Wisconsin.

 

 

 

© 2015 John Edward Terrell and Gabriel Stowe Terrell. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. The statements and opinions expressed are those of the author(s) and do not constitute official statements or positions of the Editors and others associated with SCIENCE DIALOGUES.

Thinking about thinking 1. Cognitive niche construction

John Edward Terrell 

Please note: this commentary, recovered on 9-Jan-2017, was originally published in Science Dialogues on 22-Jan-2015.


“Can we state more distinctly still the manner in which the mental life seems to intervene between impressions made from without upon the body, and reactions of the body upon the outer world again?”

William James, The Principles of Psychology, 1890: 6

By Dmitry Rozhkov (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
THE NEUROLOGIST MARCUS RAICHLE HAS remarked that studies of brain function have traditionally focused on task-evoked responses (Raichle 2010, 2015). As Daniel Kahneman has explained, such research has contributed the useful convention that there are two modes of thinking—two systems in the mind, System 1 (or Type 1) and System 2 (or Type 2). In Kahneman’s words (2011: 20–21):

System 1 operates automatically and quickly, with little or no effort and no sense of voluntary control.

System 2 allocates attention in the effortful mental activities that demand it, including complex computations. The operations of System 2 are often associated with the subjective experience of agency, choice, and concentration.

Although such conventions are useful, Raichle argues that focusing on task-evoked responses “ignores the alternative possibility that brain functions are mainly intrinsic, involving information processing for interpreting, responding to and predicting environmental demands” (2010: 180).

As he says, it is not difficult to see why so much attention has been given to monitoring neural responses to carefully designed tasks that can be rigorously controlled: “evaluating the behavioral relevance of intrinsic activity (i.e. ongoing neural and metabolic activity which is not directly associated with subjects’ performance of a task) can be an elusive enterprise” (2010: 180).

While it could be argued that intrinsic brain tasks are part and parcel of System 2 thinking, I believe it may be more constructive to infer instead that there is a third mode of thinking—one that I have suggested may be called cognitive niche construction (Terrell 2015: 29–32, 168–172)—a way of thinking that may strongly engage the brain’s default-mode network.

Default-mode network

As Raichle (2015) and Robert Spunt and his colleagues (in press) have underscored, there is considerable metabolic cost to running the human brain when it is engaged in ongoing internal activity. As the latter researchers observe: “most of the brain’s energy budget is consumed not by activity evoked by specific cognitive tasks (e.g., mental arithmetic) but by spontaneous ongoing activity that is most notable when the brain is at rest.”

Given the metabolic cost of this ongoing internal activity in what has been dubbed the brain’s default mode network (DMN) when we are not task-engaged, an obvious question arises. How can we afford such stimulus-independent activity?

Raiche, Spunt et al., and others stress the likelihood that such inner-directed brain activity must be somehow adaptive in a realistic Darwinian sense, i.e., this inner activity must be “functionally consequential for the execution of stimulus-dependent mental state inferences” (Spunt et al. in press). This inference is plausible, but arguably not sufficient.

Niche construction

How we are able to remake the world around us when we put our minds and backs to the effort has been called niche construction (Odling-Smee et al. 2003). In the biological sciences, the word “niche” means “way of life,” and every species is said to have its particular place, or niche, in the economy of life. We are just one of a number of species that excel at making and remaking their way of life, their place in the grand scheme of things, their ecological niche. Similarly, I have argued that even when it may look as if we are day-dreaming, our minds actually may be hard at work engaged in cognitive niche construction—a way of using our brains that is possibly but not necessarily unique to our species (Terrell 2015).

Others recently have also written about cognitive niche construction, but what they evidently have in mind may be more clearly activity under the heading of System 2 thinking. Steven Pinker, for instance, has defined cognitive niche construction as “a mode of survival characterized by manipulating the environment through causal reasoning and social cooperation” (Pinker 2010: 8993).

Such a description glosses over how difficult it can be to apply what we envision in our mind’s eye to the realities of life. More to the point, such a definition does not confront the obvious weakness of cognitive niche construction at least as I have described it. What goes on between our ears when we are engaged in such mental activity does not have to be rational at all, at least not if by “rational” we mean thinking that makes practical sense in the real world outside our bodies.

A Paradox

By detaching from the realities of the moment and turning our mind to our inner thoughts, we are able to ponder what I like to call the “coulds & shoulds” of life. We can devote our mind to a kind of imaginary niche construction that does not even have to be “of this world” at all. We can see seemingly impossible things in our mind’s eye. We can engage in “what if” fantasies of remarkable, perhaps sexually charged, and even quite unrealistic complexity. We can invent imaginary worlds, invent new things, rewrite the story of our life to our heart’s content. All in the mind rather than in the real world.

In short, it seems likely we engage in cognitive niche construction not just for interpreting, responding to, and predicting environmental demands—to paraphrase what Raichle has previously said. As Spunt et al. observe: “Given that the DMN activity is metabolically costly, widely distributed in the cortex, and highly sensitive to both the presence and type of task demand, it should be no surprise that this network would have functional consequences in multiple domains” (Spunt et al., in press).

They themselves hypothesize that natural selection has favored the evolution of such a costly DMN in humans (and possibly also in chimpanzees and monkeys) so that we can more skillfully “see the world in terms of other minds” and live together socially—thereby gaining far more socially than would be likely by living separately.

While this is a plausible hypothesis, it is not the only one possible, as Gabriel Terrell and I will discuss in the forthcoming commentaries.


Editor’s note: This is the first in a series of eight commentaries at SCIENCE DIALOGUES on cognitive niche construction and its implications for psychology, philosophy, and the social sciences generally.

Next in this series: “Thinking about thinking 2. Through the looking-glass.”


References

Kahneman, Daniel (2011). Thinking: Fast and Slow. New York: Farrar, Straus and Giroux.

Odling-Smee, F. John, Kevin N. Laland, and Marcus W. Feldman (2003). Niche Construction. Princeton: Princeton University Press.

Pinker, Steven (2010). The cognitive niche: Coevolution of intelligence, sociality, and language. Proceedings of the National Academy USA 107, suppl. 2: 8993–8999.

Raichle, Marcus (2010). Two views of brain function. Trends in Cognitive Sciences 14: 180–190.

Raichle, Marcus (2015). The restless brain: How intrinsic activity organizes brain function. Philosophical Transactions of the Royal Society B 370: 20140172. http://dx.doi.org/10.1098/rstb.2014.0172

Spunt, Robert P., Meghan L. Meyer, and Matthew D. Lieberman (in press). The default mode of human brain function primes the intentional stance. Journal of Cognitive Neuroscience.

Terrell, John Edward (2015). A Talent for Friendship: Rediscovery of a Remarkable Trait. Oxford and New York: Oxford University Press.


John Edward Terrell is Regenstein Curator of Pacific Anthropology at The Field Museum, Chicago, IL 60605. His latest book A Talent for Friendship: Rediscovery of a Remarkable Trait was published on December 1, 2014 by Oxford University Press. Email address: terrell[at]fieldmuseum.org

© 2015 John Edward Terrell. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. The statements and opinions expressed are those of the author(s) and do not constitute official statements or positions of the Editors and others associated with SCIENCE DIALOGUES.