With its emphasis on the cross-cultural universality, paul ekman's work on emotional expressions most clearly reflects psychology's ) perspective.

The answer is "psychology's behavioral perspective".
Behaviorism alludes to a psychological approach which underlines logical and objective techniques for investigation. The approach is just concerned about recognizable boost reaction practices, and expresses all practices that are found out through cooperation with the environment.

In financial aspects, a depression is a sustained, long haul downturn in monetary movement in one or more economies. it is a more extreme monetary downturn than a recession, which is a slowdown in financial action through the span of a typical business cycle. a depression is an irregular and extreme type of recession. so depression is always followed by recession but it is not correct to state that a depression always follow a recession.