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71.
The influence of estradiol on learning and memory is dependent on a number of factors. The effects of physiological levels of estradiol on the acquisition of a spatial working memory task mediated by the prefrontal cortex (PFC) and the hippocampus were examined in Experiment 1. Ovariectomized Long-Evans rats received daily injections of estradiol or vehicle were tested on the win-shift version of the radial arm maze. A high dose of estradiol benzoate (5 microg) enhanced acquisition of the task, whereas a low dose of estradiol (0.3 microg) increased the number of errors committed over 17 days of testing. Experiment 2 was conducted to examine site-specific influences of estradiol on spatial working memory in well-trained rats. Saline and estradiol cyclodextrin (0.1 and 0.9 microg) were infused into the prelimbic region of the PFC or dorsal hippocampus 40 min prior to testing on the win-shift task. Infusions of estradiol into both brain areas attenuated saline-infusion disruptions in working memory. Specifically, the higher dose of estradiol facilitated working memory when infused into the PFC, whereas the lower dose of estradiol facilitated performance when infused into the dorsal hippocampus. Moreover, working memory was significantly impaired 24 h after infusions of estradiol into the dorsal hippocampus but not the PFC. These data provide further evidence for the notion that estradiol can dose-dependently alter memory processes and suggest that facilitation or disruptions of working memory by estradiol are site- and time-specific. 相似文献
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73.
Villemarette-Pittman NR Stanford MS Greve KW Houston RJ Mathias CW 《The Journal of psychology》2004,138(1):5-22
Although obsessive-compulsive personality disorder (OCPD) is an Axis II diagnosis that is not commonly associated with behavioral disinhibition, the literature contains reports of occasional explosive aggressive outbursts. Existing explanations of OCPD etiology do not address the coexistence of compulsive and impulsive features witnessed in some subpopulations of patients. In this study, the authors present a compensatory theory of OCPD in an effort to explain clinical observations of an unexpectedly large number of OCPD diagnoses among patients clinic referred and self-referred for aggression problems. 相似文献
74.
Averil Overton Susan Selway Kenneth Strongman Michelle Houston 《Journal of clinical psychology in medical settings》2005,12(1):39-56
Disordered eating behaviors are often conceptualized as maladaptive emotion regulation strategies. The present study investigated links between emotional experience, schematic belief systems, and psychological themes associated with eating disorders. In contrast to the majority of studies, which focus on just one or two emotions and use nonclinical samples, this study compared the full range of emotional experience in women with eating disorders to a control group. Measures used include the Differential Emotional Scale-IV, Youngs Early Maladaptive Schema Questionnaire, and Eating Disorder Inventory-2. The study provides the first empirical evidence that women diagnosed with eating disorders report experiencing pleasant as well as unpleasant emotions more frequently than do controls. A surprising finding was that pleasant emotions (joy, interest, surprise) correlated with eating disorder themes (EDI-2 subscales) more consistently than unpleasant emotions in the eating disorder group, while the reverse was true of the control group. Also of note, eating-disordered women reported significantly less anger and similar levels of fear vs. controls. While eating-disordered women scored more highly than do controls on all maladaptive schema (suggesting high levels of distress in women with eating disorders), the pattern of correlations between schema and emotion experience was distinctly different for each group and counterintuitive for the eating disorder group. In particular, pleasant emotion was highly correlated with maladaptive schema in the eating-disordered group but not in the control group. These marked group differences in the pattern of relationships between emotion experience, eating disorder themes, and belief systems suggest that it is not valid to draw conclusions about eating disorders from research that employs only nonclinical samples. The authors discuss these findings, and suggest that women with eating disorders are proficient at using disordered eating behaviors to manipulate their experience of both positive and negative emotional states, and that this dynamic should be recognized as an important maintenance factor. 相似文献
75.
Larry J Bloom B.Kent Houston David S Holmes Thomas G Burish 《Journal of research in personality》1977,11(1):83-94
After receiving a sample shock, subjects in a Threat Condition were told that they would receive additional painful shocks while subjects in a Nonthreat Condition were not threatened with additional shocks. Subjects in an Attentional Diversion Condition were then instructed to read and think about an amusing story, subjects in a Situation Redefinition Condition were instructed to write down reasons why they should not be afraid in this situation, and subjects in a Control Condition were not given any instructions for coping with stress. (Coping Conditions were factorially crossed with Threat Conditions and 192 subjects were employed.) Physiological measures (pulse rate, finger pulse volume, skin resistance) indicated that unlike the results of previous research, attentional diversion was effective in reducing stress but situation redefinition was not. Discussion was focused on the parameters which determine whether or not a coping strategy will be effective. 相似文献
76.
77.
The Competitiveness Index is a 20-item true-false measure designed to assess the desire to win in interpersonal situations. To develop a more psychometrically sound form of the scale, 213 undergraduates were administered the original form and a modified version containing a 5-point Likert-type scale. An initial principal component analysis using a varimax rotation of the modified version yielded a four-factor solution accounting for 54.5% of the explained variance. Based on a subsequent reliability analysis. six items were dropped from the modified scale. A second analysis produced a two-factor solution accounting for 54.1% of the explained variance. Both factors (Enjoyment of Competition and Contentiousness) formed reliable subscales. The 14-item Revised Competitiveness Index had high internal consistency and was positively correlated with the original Competitiveness Index, the competitiveness subscales of the Work and Family Orientation Questionnaire, the Sports Orientation Questionnaire, and the Nach Naff measure of Need for Achievement. 相似文献
78.
The aim of the present study was to investigate the temporal stability of the Wisconsin Card Sorting Test (WCST) in a clinical population with documented brain pathology, stable cognitive deficits, and for whom repeated testing is common: chronic severe traumatic brain injury (TBI). Participants were 34 patients at least 1 year post severe TBI living at a large residential rehabilitation facility. The WCST was administered in standard fashion with both the standard and 64-card versions scored. All derived scores with norms were examined. Results indicated acceptable temporal stability of most scores for both the standard and short WCST, although the stability of the WCST-64 was poorer than for the standard WCST. Three sets of significant change indices are provided for clinical use. 相似文献
79.
Emshoff JG Darnell AJ Darnell DA Erickson SW Schneider S Hudgins R 《American journal of community psychology》2007,39(3-4):255-267
The widespread development of comprehensive community initiatives that aim to improve community health is driven by the need to change the systems charged with delivering the services and creating the policies related to a variety of health outcomes. Georgia's Family Connection initiative is the nation's largest statewide network of community collaboratives for health, with collaboratives operating in 159 counties. Data on community context, collaborative processes, engagement in systems change, and changes in programs and activities implemented, gathered consistently at the collaborative level over 3 years, will be used to answer the following questions. How do community contexts and the structure and processes of collaboratives affect implementation of systems change? How do systems changes affect intermediate outcomes such as the type of programs offered in a community? Longitudinal change in systems change and program implementation is described and significant predictors of between‐collaborative variation in longitudinal change for each outcome are identified. 相似文献
80.
Contemporary discussion concerning institutions focus on, and mostly accept, the Searlean view that institutional objects, i.e. money, borders and the like, exist in virtue of the fact that we collectively represent them as existing. A dissenting note has been sounded by Smit et al. (Econ Philos 27:1–22, 2011), who proposed the incentivized action view of institutional objects. On the incentivized action view, understanding a specific institution is a matter of understanding the specific actions that are associated with the institution and how we are incentivized to perform these actions. In this paper we develop the incentivized action view by extending it to institutions like property, promises and complex financial organisations like companies. We also highlight exactly how the incentivized action view differs from the Searlean view, discuss the method appropriate to such study and discuss some of the virtues of the incentivized action view. 相似文献