Psychology- the scientific study of the causes of bhvr & the application of the findings for the solution to psychological problems. The purpose of psych is to understand human behvr. Causal event- an event that causes another event to happen; an event responsible for a behvr s occurrence is the cause. World conflicts (poverty, terrorism, crime) is the product of human behvr. Physiological psych- examines the physiological basis of behvr w/ the nervous system in particular (e. g. drug abuse activates a part in the brain that produces a pleasurable reaction) Both fields study inherited behvral patterns - Comparative psych- studies the bhvr of a variety of organisms in an attempt to understand the adaptive & functional significance of the bhvrs & their relation to evolution. Behvr analysis- examines the effect of env t on behvr (interest lies in learning & motivation) The likelihood of a behvr to be repeated is based on its outcome.