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11.
Perry PJ Kutscher EC Lund BC Yates WR Holman TL Demers L 《Journal of forensic sciences》2003,48(3):646-651
Supraphysiologic doses of testosterone are associated with increased aggression that is hypothesized to be a function of testosterone serum concentrations, mood, and personality. The study attempted to characterize this relationship among weightlifters who were users (n = 10) and nonusers (n = 18) of anabolic steroids. Participants were interviewed using the Modified Mania Rating Scale and Hamilton Rating Scale for Depression to assess mood, the Buss-Durkee Hostility Inventory (BDHI) and Point Subtraction Aggression Paradigm (PSAP) to assess aggression, and the Personality Disorder Questionnaire (PDQ-R) to assess personality. Blood samples were obtained for the determination of total, free, and weakly bound testosterone. Comparisons of continuous variables between testosterone users and non-users were performed with a parametric (unpaired t-test) or non-parametric (Mann-Whitney) test where appropriate. Correlations with testosterone were examined separately for testosterone users and non-users, using Spearman rank correlation. The subjective (BDHI) and objective (PSAP) assessments of aggression found that supranormal testosterone concentrations were associated with increased aggression. However, the PDQ-R results suggest that this finding was confounded by the personality disorder profile of the steroid users, because steroid users demonstrated Cluster B personality disorder traits for antisocial, borderline, and histrionic personality disorder. 相似文献
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Family Characteristics and Adolescent Competence in India: Investigation of Youth in Southern Orissa
Carson David K. Chowdhury Aparajita Perry Cecyle K. Pati Chetana 《Journal of youth and adolescence》1999,28(2):211-233
This study examines the relationship among a host of family characteristics and indicators of adolescent competence in a sample (N = 107) of 8th- and 9th-grade students in one school located in Berhampur city in Orissa state, India. Social competence (SC) and antisocial behavior (AB) were assessed by teachers, and adolescents evaluated various areas of their own competence on a perceived competence scale. Final examination grades also were obtained as a general measure of cognitive competence. The results indicated that families of more socially competent participants tended to be verbally and emotionally expressive; democratic with regard to discipline, input, and decision making; close but not enmeshed; higher in their level of parent–adolescent communication and family ideals; and lower in external locus of control. Consequently, families of more antisocial adolescents had more conflict and enmeshment and were more external-locus-of-control oriented and either permissive or authoritarian. Finally, several personal and family demographic traits were positively associated with SC and negatively associated with AB, including gender (girls higher in SC and lower in AB than boys), age and grade (older students and those in grade 9 more competent and less problematic), education level of mothers and fathers (positively related to SC and negatively to AB), and birth order (middle children in the family lower in self-perceptions of competence than oldest or youngest children). The findings have implications for parenting and family-life education efforts in India that could have a major impact on the development of adolescent competence. 相似文献
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Robert Perry 《Policy Sciences》1972,3(3):349-359
A comparison of 20 years of aircraft production in Europe and America. U.S. cost increases in the system acquisition process have resulted in large part from unforeseen (sometimes unforseeable) engineering difficulties in the development phase, and from substantial production commitment before development was complete. Common European strategy completed basic development before beginning production and demonstrated utility through prototypes, using early proof-testing of engines, electronics and airframes. An alternative acquisition strategy to that used in the 1960s in the United States is recommended for the next decade: (1) incremental acquisition, based on a sequence of decision points and a succession of development and production phases; and (2) pronounced austerity in early development phases. These changes would result in lessened cost growth and lower U.S. acquisition costs, as well as in improved predictability of schedule and system performance outcomes.The following statement was prepared for the Committee on Armed Services, United States Senate, and was presented on December 7, 1971. 相似文献
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Public Choice - I apply Tullock’s transitional gains trap to the formalization of property titles in Latin America to understand public choice problems in mending institutions. In an area... 相似文献
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