Pi academic

Si-Lead race realist

Fe psychologist

Psychologist at Harvard University

Active researcher in animal learning in the Skinnerian tradition

The Edgar Pierce Professor of Psychology until his death, and previously chaired the Harvard Department of Psychology for five years

With political scientist Charles Murray, he co-wrote The Bell Curve, a controversial 1994 book on human intelligence

He was one of the founders of the Society for Quantitative Analysis of Behavior

His major research finding as an experimental psychologist is the matching law, the tendency of animals to allocate their choices in direct proportion to the rewards they provide, and to illustrate the phenomenon, if there are two sources of reward, one of which is twice as rich as the other, where he found that animals often chose at twice the frequency the alternative that was seemingly twice as valuable