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241.
    
Septal infusions of glucose exacerbate memory deficits produced by co-infusions of drugs that increase gamma-aminobutyric acid (GABA)(A) receptor activity. To further understand the interaction between glucose and GABA, this experiment tested whether glucose would also potentiate spatial working memory deficits produced by septal infusions of the GABA(B) receptor agonist baclofen. Fifteen minutes prior to assessing spontaneous alternation (SA), male Sprague-Dawley derived rats were given septal infusions of vehicle, glucose (33 nmol), baclofen (0.1 nmol), or glucose combined with baclofen in one solution. Septal co-infusions of glucose with baclofen, at doses that individually had no effect, significantly impaired SA. Thus, the memory-impairing effects of glucose are observed with either GABA(A) or GABA(B) receptor ligands. This raises the possibility that glucose may impair memory by increasing synaptic levels of GABA and subsequent activation of these different receptor subtypes. These effects of glucose could contribute to the memory-impairing effects of hyperglycemia.  相似文献   
242.
  总被引:1,自引:0,他引:1  
Stricker & Ward (2004 ) examined stereotype threat with a national sample of students taking an Advanced Placement (AP) Calculus exam, and a smaller sample taking Computerized Placement Tests (CPT). They inquired about gender either before (traditional) or after the test (which can reduce stereotype threat). They reported no significant effects of question timing. We reanalyze their findings, and argue that their conservative criterion for evidence led them to overlook significant stereotype threat effects with real practical implications. Women benefited substantially on the Calculus test, and on the CPT–Reading when demographics were asked after testing rather than before. This simple, small, and inexpensive change could increase U.S. women receiving AP Calculus AB credit by more than 4,700 every year.  相似文献   
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244.
    
The authors conducted this study to address some of the limitations in previous indecision typology research and to provide validity evidence for the indecision types that were derived. The participants were 566 first‐semester, undecided students enrolled in a career exploration course. Career indecision, personality, and ability measures were used to derive career indecision types through cluster analysis. Four distinct career indecision types were identified. Subsequently, the effect of indecision type on response to a career exploration course was examined. Level of career indecision, the criterion variable, was not differentially affected by indecision type. Implications of the findings for career counseling are discussed.  相似文献   
245.
    
This study meta-analytically reviews the influence of individuals' dispositional negative affectivity (NA) and positive affectivity (PA) on a broad range of work-related outcomes grouped into 3 categories: (a) work attitudes; (b) workplace experiences; and (c) work behavior. Across cumulative studies, it was found that NA and PA demonstrated significant effects on most of these outcomes. Moreover, we found some interesting differences in NA's and PA's relationships with work outcomes. Specifically, while NA had more influence on variables pertinent to work stressors (e.g., role problems), PA demonstrated a stronger effect on variables related to positive job and organizational context (e.g., job autonomy, procedural justice). Implications for theory advancement and future research in this area are discussed.  相似文献   
246.
This study uses data collected using a 360°-assessment instrument to investigate the structural equivalence of 360°-assessment ratings, according to rater type, controlling for organizational level. Data from 533 managers and their raters were employed in the study, which used multi-group structural equations modeling. Issues central to the implementation and use of 360°-assessment data are also considered within the context of current research and practice.  相似文献   
247.
    
Social diffusion theory has recently been recognized as a promising approach for large-scale disease prevention and health promotion efforts. This paper describes how principles and tactics from social cognitive theory, operant psychology, social psychology, social marketing, and the overarching stages of change model can be used to further develop the conceptual and strategic (technological) bases of social diffusion theory. Within an integrative framework, we discuss in detail more effective ways to train peer mediators of behavior change as one example of how social diffusion theory can benefit from this conceptual and strategic reformulation. We then further illustrate the use of peer mediators of change in human immunodeficiency virus (HIV) and cancer prevention intervention studies with both interventions training peer mediators to diffuse information, norms, and risk reduction strategies. Although the results of these studies showed reductions in high-risk behaviors across population segments, more closely following the framework discussed in this article should further increase the behavior change potential of future interventions based on social diffusion theory.  相似文献   
248.
    
Evidence that women of color are dealt with as anomalies in psychological research is discussed in order to: (a) inform researchers about the omissions, (b) stimulate interest in increased inclusion of women of color among research populations, and (c) demonstrate the need for increased diversity in research paradigms. It is noted that research paradigms directed at the study of the \"universal woman\" have in actuality focused on White middle class populations. This article examines the methodological and theoretical transformations that have occurred in the literature, and evaluates the extent to which researchers have successfully incorporated ethnicity into the study of gender issues. This is a call for an examination of women's experiences relative to ethnicity and a paradigmatic shift in the assumptions about what is worthy or appropriate for investigation.  相似文献   
249.
    
No evidence was found to support the hypothesis that neurotic patients demonstrate over-reactivity of the autonomic nervous system in response to stressful stimuli, or that introverts and extraverts are characterised by ease and difficulty respectively with which they form conditioned responses. Normal controls, instead of showing the least autonomic reactivity as postulated, showed the greatest. The difficulties of measuring autonomic reactivity in relation to pre-stress levels are discussed and in view of these problems the conclusions are interpreted with caution.Factor analysis of the data yielded a primary Anxiety/Neuroticism factor, which had high loadings for ‘basal’ forearm blood flow and heart rate which are thought to reflect anxiety. There was a close relationship between N and Taylor Scale anxiety scores and it is suggested that Eysenck's N scale is close to the clinical concept of anxiety.  相似文献   
250.
    
The purpose of this study was to examine the quality of quantitative articles published in the Journal of Counseling & Development. Quality concerns arose in regard to omissions of psychometric information of instruments, effect sizes, and statistical power. Type VI and II errors were found. Strengths included stated research questions and appropriateness of analyses. Implications of these results are provided.  相似文献   
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