palaeopsychology
/ˌpalɪəʊsʌɪˈkɒlədʒi/ /ˌpeɪlɪəʊsʌɪˈkɒlədʒi/noun
The study of the evolutionary development of the mind, or of the mind as it was in earlier stages of human development; the psychological characteristics of the prehistoric human mind.
Origin
Early 20th century; earliest use found in New York Medical Journal. From palaeo- + psychology.