The Effect of Informational Feedback on Size Judgements of Schizophrenic Patients

This experiment studied visual size judgements of hospitalized schizophrenic patients and normal controls under two conditions of presentation. Sixteen patients and sixteen normal volunteers were required to match for size a graded series of disks at a distance of 14 ft 6 in. with a 4 in. standard at a distance of 5 ft 6 in. Both groups were tested under two conditions: verbal instructions, and verbal instructions with information feedback. The results showed a reduction in error for schizophrenics under the feedback condition. These findings are discussed with reference to the research methodology of procedures which are supposed to provide relative measures of the perceptual capacities of different diagnostic groups

Audiology · Cognitive psychology · Perception · Presentation (obstetrics) · Health Systems, Economic Evaluations, Quality of Life · Psychology · Social Psychology · Spatial Neglect and Hemispheric Dysfunction · Visual perception and processing mechanisms