Person

Justin Barrett

American cognitive scientist and psychologist (b. 1971), the leading figure in the cognitive science of religion (CSR) who bridges empirical developmental psychology to theology. Barrett's research demonstrates that children spontaneously form God-concepts and theistic-type intuitions prior to religious enculturation, religious belief is cognitively natural, not culturally imposed.

Academic career

PhD in experimental psychology, Cornell University (1998)
Research positions at University of Michigan and University of Oxford (Institute for Cognitive and Evolutionary Anthropology)
Professor of Psychology, Fuller Theological Seminary (2010s)
Director of the Thrive Center for Human Development, Fuller

Barrett is distinctive among CSR scholars for being a committed Christian who interprets the field's findings as compatible with, and predicted by, the sensus divinitatis doctrine (Calvin, Plantinga). Most other major CSR researchers (Boyer, Guthrie, Bering) interpret the same data through a naturalistic-byproduct lens.

Key works

Why Would Anyone Believe in God? (AltaMira, 2004), introduces the HADD (Hyperactive Agency Detection Device) framework and argues that human cognitive architecture naturally produces religious belief; accessible entry-point to the CSR literature.
Born Believers: The Science of Children's Religious Belief (Free Press, 2012), the primary work: synthesizes developmental-psychology evidence showing children are "intuitive theists" cross-culturally; children infer agency, purpose, and design before formal instruction; proto-theism is the cognitive default.
Cognitive Science, Religion, and Theology: From Human Minds to Divine Minds (Templeton, 2011), integrates CSR with Christian theology; develops the argument that CSR findings are predicted by, not threatening to, theistic commitments.

Key concepts

HADD (Hyperactive Agency Detection Device), the cognitive module that over-detects intentional agents in the environment; explains why humans naturally infer agency behind natural events; Barrett coined this term.
Natural religion, Barrett's thesis that basic religious belief is the natural output of properly functioning human cognitive faculties, not an aberration or cultural imposition.
Promiscuous teleology, while the term is Deborah Kelemen's, Barrett's work converges with hers: children default to purpose-based explanations for natural phenomena.

Apologetic significance

Barrett's empirical research is load-bearing for three apologetic deployments:

Inverts the "atheism is the default" claim, if children are born believers, atheism is the learned deviation, not the baseline. Deployed in Atheism is a Belief P5.
Confirms Romans 1:19-21, Paul's claim that "what may be known about God is plain to them" maps onto Barrett's finding that theistic intuition is innate. See Innate Knowledge of God.
Grounds the sensus divinitatis empirically, Calvin's theological doctrine and Plantinga's philosophical articulation receive empirical support from Barrett's developmental data. See Reformed Epistemology.

Barrett is the most-cited CSR scholar in the codex's apologetic framework because he is both empirically rigorous and theologically literate, his work cannot be dismissed as "Christian propaganda" (it is peer-reviewed developmental psychology) and cannot be co-opted as "debunking religion" (Barrett explicitly argues the findings support theism).