Buller, David

David Buller is a philosopher whose work has significantly engaged with and critiqued evolutionary psychology, particularly through his book Adapting Minds: Evolutionary Psychology and the Persistent Quest for Human Nature (2005). Buller's primary contribution lies in his detailed philosophical analysis of the empirical and conceptual foundations of many claims made within the field, arguing for greater methodological rigor and a more nuanced understanding of evolutionary processes.

The Critique of Orthodox Evolutionary Psychology

Buller's critique is largely directed at what he terms 'orthodox evolutionary psychology,' often associated with the work of Leda Cosmides and John Tooby, and popularized by authors like Steven Pinker. He identifies several core tenets of this approach that he challenges:

1. The Massive Modularity Hypothesis: Orthodox evolutionary psychology posits that the mind is composed of a large number of domain-specific, functionally specialized psychological mechanisms (modules) that evolved to solve recurrent adaptive problems faced by our Stone Age ancestors. Buller argues that the evidence for such massive modularity is often weak or misinterpreted. He suggests that many psychological phenomena attributed to specific modules might be better explained by more general cognitive processes or by a smaller number of broader, more flexible modules.

2. The Environment of Evolutionary Adaptedness (EEA): The concept of the EEA refers to the ancestral environment in which human psychological adaptations are presumed to have evolved, typically identified with the Pleistocene era. Buller questions the specificity and utility of the EEA as a predictive tool. He argues that the EEA was not a single, stable environment but a diverse and changing set of conditions, making it difficult to precisely define the adaptive problems our ancestors faced and thus the specific adaptations that would have arisen.

3. The Assumption of Genetic Determinism and Universality: Buller contends that orthodox evolutionary psychology often overemphasizes the genetic basis of psychological traits and assumes a degree of universality that is not always supported by cross-cultural or developmental evidence. While acknowledging the role of genes, he stresses the importance of developmental plasticity and the interaction between genes and environment in shaping human behavior.

4. Methodological Flaws: Buller scrutinizes the methods used to infer adaptive function, arguing that many evolutionary psychological hypotheses are post hoc explanations (just-so stories) that lack independent empirical verification. He calls for more rigorous testing of hypotheses, including comparative studies, genetic analyses, and developmental research, to distinguish genuine adaptations from byproducts or cultural phenomena.

Alternative Perspectives and Nuances

While critical of specific approaches, Buller is not an anti-evolutionist. He acknowledges the fundamental importance of evolutionary theory for understanding human nature. His work aims to refine, rather than reject, the application of evolutionary principles to psychology. He advocates for a more pluralistic and empirically grounded approach, drawing on insights from developmental biology, behavioral genetics, anthropology, and cognitive science.

Buller suggests that many psychological traits might be better understood as products of general-purpose learning mechanisms, cultural evolution, or developmental processes that are themselves evolved. He emphasizes that the human mind is likely characterized by a combination of domain-general and domain-specific abilities, and that the degree of specialization of evolved psychological mechanisms is an empirical question, not an a priori assumption.

Impact and Reception

Buller's Adapting Minds generated significant debate within both philosophy and evolutionary psychology. Proponents of orthodox evolutionary psychology, such as Tooby and Cosmides, have responded by defending their theoretical framework and empirical claims, arguing that Buller misrepresents their positions or overlooks key aspects of their arguments. They contend that their approach does account for environmental flexibility and that the concept of the EEA, while broad, is a necessary heuristic.

Conversely, Buller's work has been embraced by other critics of evolutionary psychology, including philosophers, anthropologists, and some psychologists, who find his arguments compelling and his call for methodological rigor well-founded. His contributions have helped to sharpen the intellectual discourse surrounding evolutionary psychology, pushing the field to address foundational questions about its theoretical commitments, empirical methods, and the interpretation of evidence. His work underscores the ongoing challenge of integrating evolutionary theory with the complexities of human psychology in a scientifically robust manner.