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Department of Psychology
University of New Mexico


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Research Interests

In my work I explore a wide range of topics at the intersection of human behavior, evolution, and development. My approach is interdisciplinary and driven by the quest for theoretical synthesis. Over the years I have developed some broad, integrative models: the Adaptive Calibration Model of individual differences in stress responsivity (with Bruce Ellis and Birdie Shirtcliff); an evolutionary-developmental model of sex differences in attachment styles; and a unifying life history framework for evolutionary psychopathology (for an overview, you can watch this video, read this short summary, or check out this sample chapter from my book). Most of my current empirical work is devoted to testing, advancing, and refining these models with a variety of research methods.

My other contributions include novel hypotheses on the evolution of personality and self-regulation; the application of multivariate effect sizes to the measurement of sex differences in personality and behavior; theoretical and methodological work on developmental plasticity and differential susceptibility to the environment; a conflict analysis of fetal programming by maternal stress; a model of the conditions for visual experience before birth; a canalization hypothesis on the early development of mirror neurons; a model of the transition to middle childhood as a developmental switch point; a synthesis of functional trade-offs in cognition; and a new line of research in evolutionary immunology. Some of my work has a focus on statistics and methodology.

For more topics, check out my publications page.


In 2016 I was granted the Early Career Award of the Human Behavior and Evolution Society (HBES).