Effects of Perceptual Isolation on Recall by Field-Dependent and Field-Independent Subjects
The effects of perceptual isolation on recall were predicted to differ for field-independent and field-dependent subjects. 78 undergraduate students were administered the Hidden Figures Test to determine field dependency. An experimental and control list of 13 nonsense syllables, with a single isolated item and corresponding critical item, were presented spatially by means of an overhead projector. Significant facilitation of recall for the isolated item was found for both field-independent and dependent subjects. No support was found for the prediction that field-independent subjects would be facilitated in recall of the non-isolated items with the isolated item present; however, as predicted, field-dependent subjects were inhibited in recall of the non-isolated items. The results are in accordance with predictions from Gestalt theory. Gibson's stimulus-generalization theory did not adequately account for isolation effects.