1922年,布克与诺维尔在教育实验中发现了“加强鼓励因素,练习成绩有明显进步”的效应。赫洛克则在其之后的实验中进一步证明:受表扬组优于受训斥组的根本原因是两者在“兴趣”与“动机”上存在的差异。这一现象后来被《心理学》 In 1922, Buck and Nover discovered in education experiments the effect of “strengthening the encouragement factors and making marked progress in their performance.” Herlock further proved in his later experiments that the fundamental reason why the commendable group is superior to the scold group is the difference between “interest” and “motivation”. This phenomenon was later “psychology”