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641.
越轨创新行为是破除创新瓶颈, 摆脱“创新者的窘境”的有效手段, 是新时代创新的重要途径。目的的合理性和行为的偏离性, 使越轨创新行为同时具有了“忠诚”和“叛逆”的色彩。以越轨创新究竟是“忠诚”还是“叛逆”这一问题作为切入点, 分别从越轨创新行为的测量、形成机制和影响效能角度构建了一个围绕越轨创新行为的系统性研究。子研究1:基于创新过程视角, 探讨中国组织情境下越轨创新行为的结构维度, 开发本土化量表。子研究2:分别从个体、领导和组织三个层次、动态探讨越轨创新行为的形成机制。子研究3:基于事件系统理论, 从越轨创新成功/失败两方面, 构建和验证越轨创新行为对组织效能的影响机制。三个子研究相互联系并逐步递进。理论贡献在于深化学术界对越轨创新行为的理解, 推动越轨创新理论的构建, 并且拓展越轨理论、创新理论、积极组织行为学理论及事件系统理论的应用。  相似文献   
642.
跨期选择以往的研究集中于金钱数量结果。基于维度加工的模型,本文探究了在跨期选择中,人们面对质量差异的结果(如今天的低配版手机还是六个月后的高配版手机)与相对应的金钱结果(如今天的5000元还是六个月后的6000元)的选择偏好差异。三个实验结果表明:人们面对质量结果(相比于金钱结果)的跨期选择表现得更耐心,而这种现象是由于人们面对选择时在结果维度差异感知不同所致。与金钱结果跨期选择相同,质量结果跨期选择的心理加工过程同样遵循维度间差异比较。本研究为基于维度的跨期选择模型提供了新的证据。  相似文献   
643.
This study examined factors that influence body image and strategies to either lose weight or increase muscle among children. Participants were 237 boys and 270 girls. Body mass index (BMI), body dissatisfaction, cognitions and behaviors to both lose weight and increase muscles, as well as self-esteem and positive and negative affect, were evaluated. Self-esteem was associated with body satisfaction, positive affect predicted strategies to lose weight and increase muscles, and negative affect predicted body dissatisfaction and cognitions to lose weight and increase muscles. Boys were more likely to focus on changing muscles. Respondents with higher BMIs were more focused on losing weight butnot muscle. The discussion focuses on health risk behaviors related to eating and exercise among children.  相似文献   
644.
The associative mechanisms responsible for the efficacy of Pavlovian stimuli during first- and second-order conditioning have been extensively studied, but little is known about the representations underlying instrumental conditioned reinforcement. The present study investigated the associative structure underlying conditioned reinforcement, by employing an unconditioned stimulus (US) devaluation procedure on a commonly used instrumental task: the acquisition of a new response with conditioned reinforcement. Whilst US-directed behaviour was abolished following devaluation, the conditioned stimulus acting as a conditioned reinforcer supported the acquisition of instrumental responding. In this preparation then, the conditioned reinforcer appears to be impervious to devaluation of its associated US, suggesting that the underlying representation maintaining behaviour is independent of the current value of the US and may reflect the activation of a central appetitive motivational state.  相似文献   
645.
Our study sought to characterize mood disordered suicide ideators and attempters 50 years and older admitted to a psychiatric ward either for a recent suicide attempt or for ongoing suicidal ideation. We enrolled 50 patients with suicide ideation consecutively admitted to an inpatient department and 50 patients admitted for a suicide attempt made in the last 48 hours. Suicide attempters more frequently had low social support and an age of onset of mood disorder of 46 years and older, and less frequently had a history of suicidal behaviors in the family members and pharmacological treatment, despite the fact that the groups did not differ with regard to antidepressants prescribed. The groups were not distinguishable based on several variables assumed to be risk factors for suicide behavior, such as proximal life events and stressors or alcohol use disorders. In both samples, comorbidity with organic diseases, the presence of stressful life events in the past 12 months, and a diagnosis of major depression were frequently reported. In conclusion, the presence of low social support and the absence of a pharmacotherapy may increase suicidal behaviors in patients at risk.  相似文献   
646.
The association between posttraumatic stress disorder (PTSD) symptoms and suicide ideation was examined in a sample of 2,298 child survivors of the Wenchuan earthquake. Results indicated that intrusion, avoidance, hyperarousal symptom clusters, and PTSD total score were significantly associated with suicide ideation. Except for intrusion, other measures of PTSD remained as statistically significant correlates of suicide ideation even after controlling for age, gender, direct exposure, indirect exposure, and depression. Furthermore, results showed that PTSD symptoms had an indirect influence on suicide ideation that was mediated by depression. The findings suggest that avoidance and hyperarousal symptom clusters of PTSD may be two important indicators of suicide ideation among child survivors of the Wenchuan earthquake. Implications of the results for intervention and prevention of suicide behavior are discussed.  相似文献   
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