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OBJECTIVE: Low socioeconomic status (SES) environments may impede the development of a bank of resources, labeled reserve capacity, and may also be stressful, thereby depleting available reserves. In consequence, lower SES persons may experience more negative emotions, leading to adverse health consequences. The authors tested the reserve capacity model in relation to the metabolic syndrome. DESIGN: There were 401 initially healthy women who followed longitudinally for 12 years. Self-reported characteristics, stressors, and cardiovascular risk factors were measured repeatedly. Structural equation modeling was used to evaluate hypothesized relationships. MAIN OUTCOME MEASURE: Metabolic syndrome factor. RESULTS: Confirmatory factor analysis verified reserve capacity as the aggregate of optimism, self-esteem, and social support, and negative emotion as the aggregate of depressive symptoms, anger, and tension. Structural equation modeling showed two pathways to the metabolic syndrome factor, (chi2(59) = 111.729, p < .0001 chi2/df = 1.894; CFI = .956; RMSEA = .047): direct from low SES to the metabolic syndrome factor (B = -0.19, t = -3.24, p = .001); and indirect, from low SES to low reserve capacity to high negative emotions to the metabolic syndrome factor (B = -0.024, t = -2.05, p = .04). CONCLUSION: Low SES may increase risk for metabolic syndrome, in part, through reserve capacity and negative emotions.  相似文献   
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Why and How to Learn Why: Analysis-based Generalization of Procedures   总被引:2,自引:0,他引:2  
Max Wertheimer, in his classic Productive Thinking, linked understanding to transfer: Understanding is important because it provides the ability to generalize the solution of one problem to apply to another. Recent work in human and machine learning has led to the development of a new class of generalization mechanism, called here analysis-based generalization, which can be used to provide a concrete account of the linkage Wertheimer suggested: these mechanisms all, in different ways, use understanding of examples in the generalization process. In this paper I review this class of mechanism, and describe a method for causal attribution that can produce the analyses of examples that the generalization methods require, in the domain of simple procedures in human-computer interaction. This causal analysis method is linked with analysis-based generalization to form EXPL, an implemented model which is a concrete, though limited, instontiation of Wertheimer s scheme. EXPL constructs an understanding of an example procedure and generalizes it on the basis of that understanding. Results of an empirical study suggest that some of EXPL's attribution heuristics are used by people, and that while a subclass of analysis-based methods, called superstitious methods, seem to provide a more plausible account of people's generalization under the conditions of the study than a contrasting class of rationalistic methods, at least some participants appear to use methods from both classes. The results also show that explanation-based methods, which rely on comprehensive domain theories, must be used in conjunction with a means for extending the domain theory. If thus enhanced, explanation-based methods are able to mimic the effects of other analysis-based methods, and can provide a good account of the data, though combinations of other methods must also be considered. Finally, I return to Wertheimer s ideas to argue that none of the current analysis-based generalization methods fully captures Wertheimer s notion of understanding. Proper choice among different possible analyses of an example is crucial for Wertheimer, but I argue that this problem may be beyond the reach of learning systems.  相似文献   
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Growing research supports the link between individual expressions of hope and psychological well‐being. In this paper, we draw on psychological theories of hope, racial and ethnic studies, and the literature on radical healing to propose a framework of radical hope. Although the proposed multidimensional framework integrates cultural practices of People of Color in the United States, it is flexible enough to be adapted to other contexts. The paper begins by providing a brief review of the literature that conceptualizes the concept of hope in the field of psychology as a prelude to comparing the concept to the interdisciplinary notion of radical hope. Based on this body of work, we then introduce a culturally relevant psychological framework of radical hope, which includes the components of collective memory as well as faith and agency. Both components require an orientation to one of four directions including individual orientation, collective orientation, past orientation, and future orientation. The framework also consists of pathways individuals can follow to experience radical hope including (a) understanding the history of oppression along with the actions of resistance taken to transform these conditions, (b) embracing ancestral pride, (c) envisioning equitable possibilities, and (d) creating meaning and purpose in life by adopting an orientation to social justice. We conclude with a proposed research agenda for radical hope.  相似文献   
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