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Biomedical subjects

T G Newell

Publications and source records attributed to T G Newell.

6 recordsLinked to original sources
PubMed1991

Recovery of neuropsychological functions during reduction in use of phencyclidine.

A battery of 12 neuropsychological tests were administered on two occasions to 15 chronic PCP users who reduced or eliminated use of PCP over a 4-week period. A comparison sample of 15 non-PCP drug users who did not differ in age, sex, education, and ethnic composition also were tested at the two time periods. Impairment, initially higher for PCP users, decreased significantly after reduction in use of PCP. A nonsignificant increase in impairment was found for non-PCP drug users. Analysis of each variable revealed that substantial improvement occurred on the acquisition, recall, and delayed recall scores of the Randt Memory Test. Improvement also was noted for some individuals on Trails B and Digit Symbol tests.

Adult↗
PubMed1986

Neuropsychological deficits in active licensed professional boxers.

Young, active, licensed professional boxers (N = 19) were found to display a pattern of neuropsychological deficits consistent with the more severe punch-drunk syndrome of years past. These deficits resulted in significantly lower test performance than that of control athletes (N = 10) matched for race, age, and level of education. Tests that showed significant differences between groups include subtests of the Quick Neurological Screening Test, subtests of the Halstead-Reitan Neuropsychological Test Battery, and the Randt Memory Test. Fifteen of the 19 boxers scored in the impaired range of the Reitan Impairment Index, as compared to 2 of the 10 controls.

Adolescent↗
PubMed1986

Drug preference as a function of arousal and stimulus screening.

The sedating and arousing central nervous system effects of drugs have long been inferred to be a factor in their illicit use and abuse. The present study provides evidence to support this contention; specifically, preference for a particular drug is, in part, a function of arousal-seeking and stimulus-screening characteristics. In general, the results suggest that individuals who prefer central nervous system stimulants tend to have greater arousal-seeking tendencies and lower external stimulus screening ability than those who prefer central nervous system depressants. Opiate preferrers aligned more closely with stimulant preferrers than alcohol groups. Preferrers of hallucinogens were higher in internal stimulus screening than all other drug preference groups. Trait anxiety does not appear to be related to arousal seeking or to preference for arousing or sedating drugs.

Adult↗
PubMed1983

Effects of anonymity and experimenter demand on client satisfaction with mental health services.

Among the methodological issues associated with the measurement of client satisfaction are those concerning anonymity of response, experimenter demand effects, and reliability of instruments. In this study, 100 inpatients were randomly assigned in a 2 X 2 factorial design; subjects were asked or not asked to sign their names to the CSQ-8 questionnaire and were asked or not asked to "tell it like it is." The reported satisfaction of those given anonymity was significantly lower but there was no effect due to demand. Furthermore, subjects in the anonymity group had lower scores on all 8 items of the questionnaire. A factor analysis of the CSQ-8 revealed one major factor; the internal consistency of the scale was .93. The CSQ-8 was found to be a useful measure of overall client satisfaction but, because ceiling effects are a pervasive problem in client satisfaction research, anonymity should be assured whenever possible.

Analysis of Variance↗