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A C Newman

Publications and source records attributed to A C Newman.

4 recordsLinked to original sources
PubMed1988

WAIS factor pattern for neuropsychiatric inpatients.

The current study examines the factor pattern of the Wechsler Adult Intelligence Scale for a sample of 151 neuropsychiatric inpatients (97 men, 54 women). As expected, these patients performed less well on all 11 of the subtests and ranged from .60 to 1.54 SD below normative standards. These patients were neither more variable nor were the intercorrelations among the subtests lower than those of the normative group. As in previous research, maximum likelihood factor analyses revealed the presence of a Verbal Comprehension dimension and a Perceptual Organization dimension, factors that were moderately correlated (.60). The stability of a two-factor solution for the WAIS in this population and its implications for the inclusion of the WAIS as a component of a neuropsychological assessment paradigm are discussed.

Adult↗
PubMed1988

A multifactor model of the Halstead-Reitan Neuropsychological Test Battery and its relationship to cognitive status and psychiatric diagnosis.

An oblique, five-factor model of a modified Halstead-Reitan Neuropsychological Test Battery is presented. One hundred fifty-one neuropsychiatric inpatients (94 men, 57 women) were examined on 44 neuropsychological indices. Five correlated dimensions (r = .25), viz., Verbal Comprehension, Perceptual Organization, Sensory-attention, Primary Motor, and Tactile-spatial abilities, were identified by maximum likelihood factor analyses of this correlation matrix. These findings are quite similar to those reported earlier by Fowler, Richards, Berent, and Boll (1985, 1987) and Royce, Yeudall, and Bock (1976). The factors may be broadly categorized using the distinction made by Lezak (1983) for verbal, nonverbal, and mental activity variables. MANOVAs revealed systematic relationships between simple-weighted factor scores and: (1) the overall level of cognitive functioning (p less than .01), as well as (2) psychiatric diagnosis (p less than .01). Implications of these findings for understanding the impact of neuropsychiatric disorders on the structure of abilities for such patients are developed.

Adult↗