Sandra Morrison

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This study examined frontal lobe function in a group of 20 patients with schizophrenia, on and off medication, compared to 20 normals matched for age, sex, handedness, intelligence, and educational level. Schizophrenic patients generally did not perform as well as normals on the Wisconsin Card Sorting Test (WCST). Patients off medication performed less well(More)
Spin-lattice (T1) and spin-spin (T2) magnetic resonance relaxation times were examined in frontal, temporal, and striatal regions of 24 patients with schizophrenia and 10 normal comparison subjects. The schizophrenic patients had more prolonged T2 values than did the comparison subjects, particularly in the left temporal cortex and white matter, suggesting(More)
We obtained a topographic computer analysis of the electroencephalogram in 53 normal elderly subjects. Normal aging was not associated with an increase in slow (delta) activity. However, cognitive performance correlated positively with fast (beta) activity particularly in frontal leads, even after controlling for age, education, occupation, and medication.(More)
Among 24 chronic schizophrenic patients, the 10 with high ratings for negative symptoms had significantly higher left-frontal: temporal-cortical T2 ratios. This finding was unrelated to age, dose of medication, length of illness or handedness. No T1 or T2 changes were found to be associated with positive symptoms or tardive dyskinesia in the regions(More)
Alexithymia is thought to be a trait that predisposes individuals to psychosomatic and drug abuse disorders. It was hypothesized that alexithymic characteristics would lead an individual to augment stimuli in order to prevent ignoring stimuli that might be dangerous. Subjects (N = 175) were administered alexithymia and augmenting-reducing questionnaires.(More)
Two measures of alexithymia, the Schalling-Sifneos (SSPS) and the Toronto Scales (TAS) were administered to 178 male and female undergraduate students. For both measures alexithymia appears to decrease with age. Five factors for the TAS were retained accounting for 35% of the variance and for the SSPS a three-factor solution was determined accounting for(More)
The present investigation compared the Cognitive Levels Test (CLT) with the Woodcock Reading Mastery Test (WRMT) and Wide Range Achievement Test-Revised (WRAT-R) for 55 children and youth who were referred for remedial/special education services. A comparison of the correlations for the criterion measures for the WRMT and WRAT-R showed a consistent(More)
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