Jastrow, Joseph (1863–1944), a United States psychologist. He opposed the theory of psychoanalysis and ridiculed spiritualism and experiments in psychical research. Jastrow was born in Warsaw, Poland, and was brought to Philadelphia in early childhood. He received a B.A. (1882) and M.A. (1885) from the University of Pennsylvania, and a Ph.D. from Johns Hopkins University (1886). Jastrow was professor of psychology at the University of Wisconsin, 1888–1927, and president of the American Psychological Association in 1900. He taught at the New School for Social Research, 1927–33.