Sorry, "rough-and-tumble-play-r-t-play" is not in the Dictionary of Psychology....
circular causality 1. a sequence of causes and effects that...
trichromatic theory one of several concepts of the physiolo...
sample n. a subset of a population of interest that is sele...
osmotic pressure the pressure required to prevent the passa...
organic adj. 1. denoting a condition or disorde...