ButlerR. A.Incentive conditions which influence visual exploration. J. exp. Psychol., 1954, 48, 19–23.
2.
HarrisJ. D.The auditory acuity of preadolescent monkeys. J. comp. physiol. Psychol., 1943, 35, 255–265.
3.
HefferlineR. F.An experimental study of avoidance. Genet. Psychol. Monogr., 1950, 42, 231–334.
4.
LindquistE. H.The design and analysis of experiments in psychology and education. Boston: Houghton Mifflin, 1953.
5.
MarxM. H.HendersonR. L.RobertsC. L.Positive reinforcement of the bar pressing response by a light stimulus following dark operant pretests with no after effect. J. comp. physiol. Psychol., 1955, 48, 73–76.
6.
MillerN. E.Studies of fear as an acquirable drive: I. Fear as motivation and fear reduction as reinforcement in the learning of new responses. J. exp. Psychol., 1948, 38, 89–101.
