Darwin in Mind: The End of Evolutionary Psychology?

Darwin in Mind–The End of Evolutionary Psychology?


August 2012: Updated, revised, and re-blogged this post as Darwin in Mind–-The End of Evolutionary Psychology for Anthropology. Please visit there!

John Hawks blog-post Adapting evolutionary psychology points the way to an article titled Darwin in Mind: New Opportunities for Evolutionary Psychology (Bolhuis et al. 2011). The subtitle about “new opportunities” is deceptive: the Gene Expression blog calls it “the end of evolutionary psychology.” I agree.

The “new opportunities” discussed in “Darwin in Mind” would dissolve almost all the basic assumptions that made evolutionary psychology possible and popular. When the authors conclude that “a modern evolutionary psychology would embrace a broader, more open, and multidisciplinary theoretical framework, drawing on, rather than being isolated from, the full repertoire of knowledge and tools available in adjacent disciplines” (6), it reads more like evolutionary psychology would and should dissolve into those adjacent disciplines.

Darwin in Mind: The End of Evolutionary Psychology?Unfortunately evolutionary psychology is not dissolving due to the anthropological critique, such as what many of the chapters in Complexities: Beyond Nature and Nurture attempted to accomplish (see the blog post Anthro-Flop-ology). Anthropology figures very little for “Darwin in Mind,” and I should emphasize the article is largely an internal evaluation of evolutionary psychology, not an outsider critique. Still, there are some important points for anthropological research and teaching:

Darwin in Mind abandons a universal human nature for evolutionary psychology

“Darwin in Mind” emphasizes the environmental aspects of brain development and “remarkable plasticity in the brain’s structural and functional organization” (2). Moreover, “the view that a universal genetic programme underpins human cognition is also not fully consistent with current genetic evidence” (3). On the one hand, this seems like great news, and we can now hopefully understand Steven Pinker’s The Blank Slate (2003) as more ideological projection than science. Maybe we can even stop plugging Donald E. Brown’s Human Universals in Anthropology 101, like at least two prominent introductory anthropology textbooks do (see review of Kottak and Scupin and Decorse). On the other hand, although the authors of “Darwin in Mind” state “there is no uniform human genetic program” (3), this seems to move them toward considering more specific genetic programs:

Cultural practices are likely to have influenced selection pressures on the human brain, raising the possibility that genetic variation could lead to biases in the human cognitive processing between, as well as within, populations. (3)

This seems to lead to scary new directions which will make us long for Pinker and Brown. For a sense of the brewing storm, see the section on “ethnobiogeny” in Race Redux. See also the related content section Anthropology and Human Nature).

Darwin in Mind acknowledges hunter-gatherer diversity.

The idea that there was one stage of hunting and gathering which produced all these defined mental modules always seemed strange, and evolutionary psychology has now recognized the problem with “the abstract concept of stable selection pressures . . . The Pleistocene was apparently far from stable” (2). Apparently a solution to that issue was proposed, but it also seems strange: “the more recent formulation . . . presents a broader, less specific theoretical landscape of our past lives, based on an abstract statistical composite of all relevant past selective environments” (2). But if we are throwing out the idea of a uniform human genetic program, we can probably also throw out the need for an abstract statistical composite of past human societies (see also related section Many ways of gathering and hunting).

Darwin in Mind considers niche construction.

The idea of niche construction is simple: instead of assuming organisms adapt to a particular environmental niche, organisms are in fact active participants in the niche, and their activities contribute to change the selection pressures for subsequent generations. These activities have both intentional and unintentional effects, and there are always many organisms participating in the niche. From “Darwin in Mind”:

A niche-construction perspective argues that human beings are predicted to build environments to suit their adaptations, and to construct solutions to self-imposed challenges, aided and abetted by the extraordinary level of adaptive plasticity afforded by our capacities for learning and culture. While adaptiveness is far from guaranteed, from this theoretical perspective humans are expected to experience far less adaptive lag than anticipated by evolutionary psychology. (4-5)

Although the authors too-much emphasize niche construction as human-directed and largely successful, it is nevertheless an important perspective. It opens the door for different ways of thinking about evolution and selection, as Tim Ingold has explained: “Through contributing to the environmental conditions of development for successor generations, organisms–including human beings–actively participate in their own evolution” (Ingold 2000:292, and see also section Evolution and Natural Selection, Anthropologically).

I was a bit puzzled by John Hawks’s statement that “the idea of niche construction irritates me a lot more than evolutionary psychology ever does.” I’ve had quite the opposite reaction, although it could be that we read different niche-construction literatures. Hawks writes:

The “niche-construction perspective” appears to predict that post-agricultural sedentary humans (living in cities and villages, building and living in structures, working long hours, using a monetary economy, and having vastly higher birthrates) have found ways to replicate a hunter-gatherer lifestyle so that their cognitive adaptations will remain well-adjusted to their current environments.

I don’t see why niche construction would predict such a thing. If that is how niche construction is used in the evolutionary literature, then it would indeed be very annoying. But as a general principle, it seems a strange application of a niche-construction perspective. Although niche construction can be used problematically, it remains a useful idea for anthropologists building a more dynamic concept of evolution (my preferred Introduction to Anthropology textbook uses niche construction extensively).

Hawks argues “the paper fails to accurately present the arguments put forward by mainstream evolutionary psychologists” but Razib Khan at Gene Expression says it “is rather like the last person to leave turning the light off.” I would see “Darwin in Mind” as an important piece for anthropology to note, as it may signal a shift in evolutionary psychology, and actually presents “new opportunities” for anthropology–along with new dangers.

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