Builds upon earlier experiments in an attempt to measure the interferences between simultaneous tasks and the effects of hypnotic dissociation in increasing or decreasing this interference, thus testing the validity of one or the other of two theoretical models. (Author/RK)

The present experiment was designed to assess the physiological changes instigated by the learned helplessness task, and to evaluate whether the physiological response patterns are similar to those reported in other studies on depression cited in this article. (Author/RK)

A large number of principles have been offered to account for thought disorder in schizophrenia. The two with which this paper is concerned are overinclusion and self-editing deficit. (Author)

Therapeutic implications of the learned helplessness model of depression were tested. (Editor)

The performance of hospitalized paranoid schizophrenics, nonparanoids, and hospitalized controls was compared on motor, perceptual, and cognitive tasks of increasing complexity. The data were examined within the context of comparing differential predictions made by input and central processing theories of information-processing deficit. (Editor)

Elderly depressives sometimes perform as badly as patients with dementia on tests of memory. It was hypothesized that this might be because depressives adopt a very conservative response strategy rather than because their memory is really impaired. (Editor)

Twenty-eight schizophrenics (14 paranoid and 14 nonparanoid) were compared with 14 normals on their judgments of similarity among words. The judgments were analyzed using an individual-differences multidimensional scaling procedure. (Editor)

The response times of 32 process schizophrenics and 16 nonhospitalized controls were compared on three visual search tasks. Results suggest that process schizophrenics are not abnormally slow when extracting information from visual displays, and they appear to perform similar operations and strategies to those of normals when doing so. (Editor/RK)