This study investigated the hypothesis that primary process expression on Gottshalk's Five Minute Verbalization Task would be more representative of clinical status in schizophrenia than primary process expression on the Rorschach. Subjects were 21 males and 15 females, ages 19-41 years, newly admitted to the hospital and treated with…

It has been shown that schizophrenics have certain difficulties in the processing of semantic context. These difficulties have usually been evaluated using lexical decision tasks with semantic priming. In this study, we chose to examine the idea of an abnormality in the early stages of semantic context processing in thought-disordered…

Explores whether it is possible to isolate some of the traditional cognitive controls in a group of seriously disturbed psychiatric patients then evaluates whether various diagnostic groups differ from each other and from normals with respect to these cognitive controls. (Author/RK)

The purpose of this study was to determine the effect of competition on the level of schizophrenic thought disorder by having groups of schizophrenics perform a task under competitive and noncompetitive conditions. (Author)

This study was designed to identify the general level of cognitive processing that is especially vulnerable to distraction in schizophrenia. Attempts to determine at what level auditory distraction interferes with schizophrenics' performance, as opposed to normals, on simple recall tasks. (Editor/RK)

Assessed the effect of associative (response) interference on the word associations of male and female process and reactive schizophrenics in two studies that used the difference in associative disturbances between high and low interference (low and high commonality stimulus words) as the measure. Findings supported predictions from a qualitative…

Examined longitudinal changes in cognitive functioning for aging twins. Found that those who were considered demented in old age had achieved lower test scores 20 years prior to diagnosis and experienced greater declines in vocabulary and forward digit span over time than those without dementia. Suggests that dementia may develop very slowly.…

This investigation tested the validity of Loren Chapman's thoery of schizophrenic thought disorder. The vocabulary test from the Shipley-Hartford Scale served as the control task, and the multiple-choice vocabulary test used by Boland and Chapman to disclose a schizophrenic deficit related to thought disorder served as the experimental task.…

Paranoid and nonparanoid schizophrenics were compared to normals in their performance on a sentence verification task. Results were related to past evidence and hypotheses about central processing performance among schizophrenics. (Editor/RK)

This evaluation of thought disorders in 11 high functioning autistic young adults and older adolescents found poverty of speech, poor reality testing, perceptual distortions, and areas of cognitive slippage. In comparison with a schizophrenic reference group, autistic subjects demonstrated more poverty of speech and less illogic as well as similar…

Background: Monitoring brain processes in real time requires genuine subsecond resolution to follow the typical timing and frequency of neural events. Non-invasive recordings of electric (EEG/ERP) and magnetic (MEG) fields provide this time resolution. They directly measure neural activations associated with a wide variety of brain states and…