Richard J. Haier is an American psychologist who has researched a neural basis for human intelligence, psychometrics, general intelligence, and sex and intelligence. Haier is currently a Professor Emeritus in the Pediatric Neurology Division of the School of Medicine at University of California, Irvine. He has a Ph.D. from Johns Hopkins University. He is also the editor-in-chief of the journal Intelligence since 2016. He has worked with Rex Jung on the parieto-frontal integration theory (P-FIT) which uses neuro-imaging to examine the neuroscience of intelligence.