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Biomedical subjects

W A Pieper

Publications and source records attributed to W A Pieper.

14 recordsLinked to original sources
PubMed1995

Validation of the Clance Imposter Phenomenon Scale.

The Clance Impostor Phenomenon Scale (CIPS; Clance, 1985) was compared to the newly developed Perceived Fraudulence Scale (Kolligian & Sternberg, 1991). The two scales were found to have high internal consistency and to correlate in a similar manner with other measures. Further, discriminant validity evidence for the Impostor Phenomenon (IP) was provided by comparing the CIPS to measures of depression, self-esteem, social anxiety, and self-monitoring. The IP was related to, but substantially discriminable from, these constructs. Finally, construct validity evidence for the CIPS was provided through principal components analysis that yielded three stable factors: Fake, Discount, and Luck.

Journal Article↗
PubMed1977

Alcohol withdrawal reactions in rhesus monkeys.

The magnitude of the ethanol withdrawal reaction was assessed in rhesus monkeys (Macaca mulatta) following 96 hours of either constant or systematically fluctuating blood ethanol concentrations (BEC) using both physiological tremor and scores on a behavioral checklist as dependent measures. Although specific BEC (50, 100, 200 or 300 mg/dl) were not reliably related to changes in mean frequency of tremor, this measure was a statistically significant curvilinear function of time as measured before and after zero BEC during the withdrawal period. Further, scores from the behavioral checklist demonstrated a dose-response relationship with respect to BEC. The data also suggest that systematically fluctuating BEC are associated with less severe withdrawal reactions when compared with appropriate data from the constant BEC condition.

Animals↗
PubMed1976

Great apes and rhesus monkeys as subjects for psychopharmacological studies of stimulants and depressants.

A group of experiments is described in which chimpanzees and orangutans are utilized as subjects in research projects designed to evaluate the effects of stimulant and depressant drugs on learning and performance. Efficiency of performance on a task which measures spaced responding was impaired when subjects smoked cigarettes containing delta9-tetrahydrocannabinol prior to testing. In a sequential learning task, these subjects also demonstrated reduced performance when stimulatn drugs were orally administered before testing. Depressant drugs did not produce comparable decrements in sequential learning performance. Physical and behavioral tolerance and dependence on ethanol were investigated in rhesus monkey subjects using a variety of experimental procedures, including forced oral acceptance, intragastric intubation, intravenous infusion, and conditioned voluntary oral acceptance.

Animals↗
PubMed1975

Induction of physical dependence upon alcohol in nonhuman primates.

Following the description of the alcohol withdrawal syndrome in man, efforts have been made to use the nonhuman primate as an animal model for studying the development of physical dependence upon alcohol. There is now general agreement regarding the qualitative description of the withdrawal reaction in the rhesus monkey, and various approaches, including intravenous infusion, intragastric intubation, and nonvolitional oral intake of ethanol have been successful in producing withdrawal in these animals. There still remain the major problems of developing objective procedures for quantitatively assessing the severity of the withdrawal syndrome and establishing the dose dependent and time dependent relationships between ethanol intake and the development of physical dependence. Until these basic issues are empirically resolved, little progress can be expected in our understanding of the critical determinants of the addictive process.

Administration, Oral↗
PubMed1972

The chimpanzee as an animal model for investigating alcoholism.

Young chimpanzees (Pan troglodytes) will accept ethanol in quantities sufficient to produce symptoms of withdrawal when ethanol is subsequently discontinued. Mild to severe symptoms of physical dependence, including grand mal seizures, are observed when ethanol is abruptly withdrawn after 6 to 10 weeks of chronic oral intake. In addition, the rate of disappearance of ethanol in blood increased during periods of chronic ingestion, an indication of developing metabolic tolerance. These results suggest that the young chimpanzee may be a suitable model for experimental studies of alcoholism.

Alcoholism↗
PubMed1969

Autosomal trisomy in a chimpanzee: resemblance to Down's syndrome.

An infant chimpanzee (Pan troglodytes) with clinical, behavioral, and cytogenetic features similar to those in Down's syndrome is described. The infant shows retarded growth rate, congenital abnormalities, retarded neurologic and postural development, epicanthus, hyperflexibility of the joints, muscle hypotonia, and trisomy of a small acrocentric chromosome.

Abnormalities, Multiple↗
PubMedDate not supplied

Retention of functional tolerance to ethanol in rhesus monkeys (Macaca mulatta).

Tolerance to ethanol (3 g/kg 90 min prior to testing) was assessed in a group of 4 rhesus monkeys in which tolerance development had been observed using the same behavioral task one year prior to the present study. Although some decrements in performance on a two-choice discrimination reversal learning task were observed, these changes were transient and statistically insignificant. Results indicate that functional tolerance persisted throughout a one year abstinence period.

Animals↗
PubMedDate not supplied

NES test performance in a large US Army veteran sample: relationships with both demographic factors and traditional neuropsychological measures.

A large sample of Vietnam-era US Army veterans completed a set of 16 neuropsychological tests, including six computer-based tests from the Neurobehavioral Evaluation System (NES), during medical examinations supervised by the US Centers for Disease Control (CDC). Data for 881 participants of the Agent Orange Validation Study (AOV) and Vietnam Experience Study (VES) were available for analysis from public access data tapes provided by CDC. Information was available for several potential covariates from demographic questionnaires, a medical examination, and a medical history. Explorator, principal components factor analysis of 16 test variables yielded four factors, including one on which most of the NES tests loaded. The single best predictor of most neuropsychological performance variables was an index of general intellectual level as measured at entry into the Army almost 20 years before the neuropsychological examinations. Alcohol drinking variables were not related to neuropsychological performance. Several measures of general intelligence were compared for use as covariates of neuropsychological test performance. All were superior to years of education in statistically controlling for general intellectual level.

Adult↗