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Professor Aaron P. Blaisdell, PhD

Dr. Blaisdell is a UCLA Psychology Professor where he directs the Comparative Cognition Lab. Dr. Blaisdell is a member of the UCLA Brain Research Institute, the UCLA Integrative Center for Learning & Memory, and the UCLA Evolutionary Medicine program. He received a BA in Anthropology (SUNY Stony Brook), an MS in Anthropology (Kent State University), a Ph.D. in Behavioral Neuroscience (SUNY Binghamton), and had 2 years of NIH-funded postdoctoral training (Tufts University).

I am interested in animal cognition and behavior. How do animals build and use representations of their world? I use Pavlovian and instrumental conditioning procedures to dissect this question. My work addresses a number of research questions at the interface between associative and cognitive processes. How do rats make causal inferences? What other rational processes do rats use? How do pigeons learn and integrate spatial maps? What are the sources of behavioral variability and what is its role in problem solving? Recently I have begun to study attention, perception, and learning in hermit crabs.

A second interest of mine is in how human ancestry and evolution can inform us about our health and well being. In particular, our modern world is quite different from that of our ancestors, to the detriment of our health and brain function. I co-founded the Ancestral Health Society https://ancestralhealth.org/ which organizes the annual Ancestral Health Symposium. I also founded and am Editor-in-Chief of the Journal of Evolution and Health https://jevohealth.com/journal/, a peer-review journal of the Ancestral Health Society.

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Statement on Diversity

By its very nature, the field of comparative psychology embraces and promotes an understanding of diversity as a fundamental principle of all life on Earth, and provides the tools by which not to rank order entities based on differences, but to understand all individuals human and nonhuman, as a unique endpoint of their shared and unique ancestry and heritage. There is no room in such a philosophical framework for judgements of better or worse based on individual differences. It is this intellectual stance that I am passionate about and weave into every facet of my interaction with the world and its populace.