Psychologists have used three perspectives in their efforts to explain motivation. these include an emphasis on optimal arousal, a hierarchy of needs, and

One of the theories psychologists have used in their efforts to explain motivation include drive reduction theory, by Clark L.Hull, it argues that the impulse is the tendency to activity generated by a need, that need, which is the state of imbalance or internal discomfort, caused by a lack, this imbalance provokes in the organism a demand for rebalancing that does not cease until the lack or even the excess has been eliminated or replaced by another..