With the respectability of the senses and feelings established, textbooks written by the Scottish philosophers began to include such topics as percep… - Baldwin R. Hergenhahn

In his approach to the history of psychology, E. G. Boring (1886–1968) stressed the importance of the Zeitgeist in determining whether, or to what extent, an idea or viewpoint will be accepted. Clearly, ideas do not occur in a vacuum. A new idea, to be accepted or even considered, must be compatible with existing ideas. In other words, a new idea will be tolerated only if it arises within an environment that can assimilate it.

Insightful learning is usually regarded as having four characteristics: (1) the transition from presolution to solution is sudden and complete; (2) performance based on a solution gained by insight is usually smooth and free of errors; (3) a solution to a problem gained by insight is retained for a considerable length of time; (4) a principle gained by insight is easily applied to other problems.

It must be realized that departing from Freudian dogma at the time was no easy matter. In fact, those who did so were excommunicated just as if they had violated religious dogma. Horney was excommunicated because she dared to contradict the master.… Horney learned from observing her father as a child how devastating blind belief in religious dogma could be; perhaps that was one reason she decided not to let Freud go unchallenged.