Audiogenic Seizures: Insulin and High Blood Sugar

Inverted black-white photographs of the faces of highly familiar peers (classmates, fraternity brothers, etc.) were presented to 350 Ss ranging from 3 to 20 years of age. In an untimed test session, S tried to identify the person in the inverted photograph. Success in this task was positively correlated with age up to approximately 14 years, but performance deteriorated after this age; college-age S s and preschool Ss' performances were approximately equal. This finding contrasts with the current view that the effects of disorientation on perception becomes less potent with age. A cognitive explanation is offered for the early rise in the performance curve; the subsequent reduction in level of performance is attributed to rigidity of the perceptual mechanism as a function of overlearning of a mono-oriented configuration.