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Biomedical subjects

R L Cromwell

Publications and source records attributed to R L Cromwell.

At least 37 records · Page 2Linked to original sources
PubMed1980

Personal constructs among depressed patients.

The Kelly Role Construct Repertory Test (rep grid) was administered to 19 depressed patients, 19 psychiatric controls, and 19 normal controls. Tests were analyzed to produce measures of cognitive complexity, self-ideal congruency, negative self-construing, identification (self-other distances), and consistency of within-factor self-attribution. In comparison to the two control groups, three characteristics of depressed patients emerged: a) the well known tendency to construe oneself negatively occurred but not in terms of a greater number of factors with consistent negative self-description; instead, b) depressed patients had more mixed (positive and negative) self-description than other patients, thus suggesting a propensity to cognitive slot movement; finally, c) independent of positivity/negativity, depressed patients had a greater tendency to view themselves as different from others. From these findings a formulation about depression is presented, and implications for etiology and treatment are discussed.

Adult↗
PubMed1979

Reaction time crossover in process schizophrenic patients, their relatives, and control subjects.

Of 70 process schizophrenic patients clinically assessed and tested for reaction time, 40 showed reaction time crossover. Of the 40 with crossover, 53 of their first degree relatives were clinically assessed and tested. Five of the relatives, found to have psychotic symptoms, were analyzed separately. Also, 41 control subjects without personal or family history of psychiatric disturbance were clinically assessed and tested. The nondisturbed relatives had reaction time crossover (regular minus irregular) significantly greater than the (expected) negative values of the normal control subjects, but not significantly greater than a zero value within subjects. When disturbed and nondisturbed relatives were combined, greater differences indicative of crossover occurred. On the other hand, the relatives, as expected, did not show the slow mean reaction time characteristic of diagnosed schizophrenic patients.

Adolescent↗
PubMed1978

Cognitive and evoked response measures of information processing in schizophrenics with and without a family history of schizophrenia.

Twenty-four male schizophrenics, 12 (SFH) with schizophrenia in the immediate family and 12 (SNFH) with no evidence of schizophrenia in the family background, and 24 male control subjects, 12 highly educated (HEC), and 12 minimally educated (MEC), were assessed for premorbid social adjustment and were administered the Digit Symbol Substitution Test, a size estimation task, and the EEG average evoked response (AER) at different levels of stimulus intensity. As predicted from the stimulus redundancy formulation, the SFH patients were poorer in premorbid adjustment, were less often paranoid, functioned at a lower level of cognitive efficiency (poor digit symbol and greater absolute error on size estimation), were more chronic, and, in some respects, had size estimation indices of minimal scanning. Contrary to prediction, the SFH group had the strongest and most sustained augmenting response on AER, while the SNFH group shifted from an augmenting to a reducing pattern of response. The relationship between an absence of AER reducing and the presence of cognitive impairment in the SFH group was a major focus of discussion.

Adult↗