Cognitive deficits in children with sickle cell disease.

We tested a hypothesis that children with sickle cell disease who are completely normal by magnetic resonance imaging can still be cognitively impaired, as predicted by a model of diffuse brain injury. Fifty-four patients with hemoglobin SS (average age 10.9 years +/- 2.

Psychological testing on the Internet: new problems, old issues.

The Internet has significantly changed the way people conduct business, communicate, and live. In this article, the authors' focus is on how the Internet influences the practice of psychology as it relates to testing and assessment. The report includes 5 broad sections: background and context, new problems yet old issues, issues for special populations, ethical and professional issues, and recommendations for the future.

Developmental sex differences in verbal learning.

Although sex differences in verbal learning and memory have been reported in adults, much less is known about when these sex differences emerge and how they develop. In this study, 401 boys and 410 girls between the ages of 5 and 16 years were administered the California Verbal Learning Test--Children's Version. Sex differences were found at all age levels.

Rey Auditory-Verbal Learning Test performance of patients with and without memory impairment.

Investigated performance on the Rey Auditory Verbal Learning Test (AVLT) of 92 psychiatric and neurological patients classified as memory-impaired (N = 45) or non-memory-impaired (N = 47). The groups were comparable on age and education. Relative to the non-memory-impaired Ss, performance of the memory-impaired patients was significantly lower on all AVLT scores, ps less than .

Validity of the Narcissistic Personality Inventory (NPI) in a psychiatric sample.

Investigated the validity of the Narcissistic Personality Inventory (NPI) in a psychiatric sample. Fifty psychiatric patients were given the NPI as part of a routine psychological evaluation. Correlations between the NPI and the basic personality style scales of the Millon Clinical Multiaxial Inventory (MCMI) were obtained; the largest correlation was between the NPI and the narcissism scale of the MCMI (r = .

Interrelationships between and factor structures of the WAIS-R and WAIS in a neuropsychological battery.

We investigated whether the Wechsler Adult Intelligence Scale-Revised (WAIS-R) and Wechsler Adult Intelligence Scale (WAIS) demonstrate similar patterns of relationship with the Halstead-Reitan Battery (HRB). Fifty VA Medical Center patients were administered the WAIS-R and HRB and 50 completed the WAIS and HRB. The groups were comparable in terms of demographic variables.

On substituting the WAIS-R for the WAIS in neuropsychological assessment: a caution for clinicians.

The Wechsler Adult Intelligence Scale-Revised (WAIS-R) yields lower Full Scale IQs than the Wechsler Adult Intelligence Scale (WAIS). Thus, a prediction about a patient's neuropsychological functioning based on the WAIS-R will differ from that based on the WAIS. The present study compared predicted Halstead Category Test (HCT) error scores based on the WAIS-R with those based on the WAIS.

Reliability of the WAIS-R with a mixed patient sample.

Reliability of the WAIS-R for a mixed sample of psychiatric and neurological patients was determined. Split-half reliabilities and standard errors of measurement were computed for all subtests (exept Digit Span and Digit Symbol) and the Verbal, Performance, and Full Scale IQs. Only the Arithmetic subtest had a reliability estimate which was significantly lower than that of the 35-44-yr.

Concurrent validity of the Luria-Nebraska Memory Scale.

Investigated the concurrent validity of the Luria-Nebraska Neuropsychological Battery (LNNB) Memory Scale using the Wechsler Memory Scale (WMS) as the criterion. For 32 psychiatric patients, the LNNB Memory Scale yielded a significant correlation with the WMS MQ, r (30) = -.65, p less than .