noun. 1. the study of specific psychological procedures in modern human beings which are considered to have started in more formative phases of human and, possibly, non-human animal evolution. These consist of unconscious procedures, like the collective unconscious. The word was posited in this sense by Carl Jung. 2. the current-day reconstruction of the psychological responses of prehistoric humans.

PALEOPSYCHOLOGY (PALAEOPSYCHOLOGY): "I want to attend graduate school and study paleopsychology."