Sample Diversity and Socioecological Theory Are Essential to the Future Of
PAPER Broadening horizons: Sample diversity and COLLOQUIUM socioecological theory are essential to the future of psychological science Michael D. Gurvena,1 aDepartment of Anthropology, University of California, Santa Barbara, CA 93106 Edited by Daniel Hruschka, Arizona State University, and accepted by Editorial Board Member Susan A. Gelman April 10, 2018 (received for review December 15, 2017) The present lack of sample diversity and ecological theory in flourished in areas of anthropology and economics, but have had psychological science fundamentally limits generalizability and relatively limited impact in psychology. Psychology has been obstructs scientific progress. A focus on the role of socioecology in considered more a proximate level explanation detailing mech- shaping the evolution of morphology, physiology, and behavior anism, complementing the ultimate-level functional approach of has not yet been widely applied toward psychology. To date, behavioral ecology. Evolutionary psychology has been remark- evolutionary approaches to psychology have focused more on ably influential in showcasing hypothesized design features of finding universals than explaining variability. However, contrasts psychological mechanisms, but emphasis in practice has been between small-scale, kin-based rural subsistence societies and more on uncovering human universals than explaining variability. large-scale urban, market-based populations, have not been well The overwhelming emphasis on Western, educated, industrial- appreciated. Nor has the variability within high-income countries, ized, rich, democratic (WEIRD) samples in psychological studies or the socioeconomic and cultural transformations affecting even is now well recognized (2), but recognition has had little impact the most remote tribal populations today. Elucidating the causes on broadening the sample pools or research directions in much and effects of such broad changes on psychology and behavior is a of psychology (3).
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