Effects of Explicit Instructions,Metacognition, and Motivation on Creative Performance

Effects of explicit instructions, metacognition, and intrinsic motivation on creative homework performance were examined in 303 Chinese 10th-grade students. Models that represent hypothesized relations among these constructs and trait covariates were tested using structural equation modelling. Explicit instructions geared to originality were positively related to originality of homework, but not to fluency/flexibility of homework. Participants with high intrinsic motivation for creative work scored higher on originality as well as fluency/flexibility of homework, whereas intrinsic motivation for challenging work had an inverse effect on creative homework. Theoretical claims on the relation between explicit instructions and metacognitive activities and between the latter and creative performance were not supported by this study. The degree of explicitness of instructions and the nature of the tasks were discussed in relation to the findings on the effect of explicit instructions. Further, the difference of creative process involved in the production of original versus fluent/flexible creative performance and the difference in the two types of intrinsic motivation and their effects on creative performance were discussed based on various studies including brain activities. Implications of the findings for the Chinese education system were discussed.     

Gender-Specific Conflicts among Urban African-American Youth: The Roles of Situational Context and Issues of Contention

The literatures on violence among young men and young women have highlighted the importance of situational context. However, few studies have compared disputes that do not result in violence with those that do, and even fewer have been positioned to investigate the role situational context may play across gender in accounting for these outcomes. Drawing on recent scholarship on gender and violence, this research explores the situational contexts of youth conflicts among African-American adolescent boys and girls. Using a large sample of narrative accounts of 153 violent and nonviolent conflicts, we examine how youth describe the issues of contention in their conflicts, how these relate to the situational contexts in which conflicts emerge, and similarities and differences in the antecedents, contexts, and extent of male and female violence.     

员工为什么乐于助人?多层次的领导–部属交换对帮助行为的影响

基于社会交换理论,以56名直属主管和274名下属的配对数据为样本,考察了多层次的领导–部属交换对个体和团队层次上的帮助行为的影响及作用过程。跨层次分析结果表明:(1)个体层次的人际公平中介了个体和团队层次的领导–部属交换对员工帮助行为的影响;(2)团队层次的人际公平氛围中介了团队平均领导–部属交换对个体和团队层次的帮助行为的影响;(3)领导–部属交换关系差异化对个体和团队层次的领导–部属交换与帮助行为之间的正向关系均具有显著的负向调节作用,即相对于较高的领导–部属交换关系差异化,较低的领导–部属交换关系差异化强化了个体和团队层次的领导–部属交换对帮助行为的影响。     

High-strain induced reverse martensitic transformation in an ultrafine-grained Ti-Nb-Ta-Zr alloy

We report on a novel phenomenon, that is a high-strain-induced reverse martensitic transformation in an ultrafine-grained Ti–36Nb–2Ta–3Zr (wt.%) alloy processed by equal channel angular pressing (ECAP) at room temperature. Our results show that a martensitic transformation from body-centred cubic β matrix to orthorhombic α″ martensite occurs under low-strain ECAP conditions and that a large portion (~34%) of martensite transforms into a matrix phase (i.e. reverse martensitic transformation) with increasing ECAP strain to a high value of 4 (i.e. 6 passes) with a corresponding reduction in the α″-lath thickness and a refinement of grain size in the matrix phase.     

Public Discourse and Public Policy: Some Ways That Metaphor Constrains Health (Care)

Since the terms of the health policy debate in the United States and Canada are largely supplied by biomedicine, the current “crisis” in health care is, in part, a product of biomedical rhetoric. In this essay, three metaphors widely identified as being associated with biomedicine—the body is a machine, medicine is war,and medicine is a business—are examined with a view to the ways in which they influence the health policy debate, not only with respect to outcomes, but also with respect to what can be argued at all. The essay proposes that biomedical language itself be foregrounded as the constitutive material of public discourse on health policy.     

Insurance Coverage and Mental Health Service Use by Adolescents with Serious Emotional Disturbance

This paper examines the relationships between insurance coverage, need, and mental health services in a community-based sample of 1,015 youths who were 9, 11, and 13 years old at the beginning of the study. They were followed over a two-year period. A strong measure of need based on a standardized diagnostic interview was available and repeated over three annual waves. Data on service use was collected quarterly across two years. Major findings included: (a) high need (serious emotional disturbance [SED]) was strongly related to use of any mental health services; (b) services use was much more likely to occur with public (Medicaid) insurance coverage than either private or no insurance; (c) considerable unmet need was observed even for youths with SED; (d) school-based mental health services potentially substituted for professional mental health services; and (e) there was little unnecessary use of mental health services in the low need group. The major policy implication of these findings is that the regulation of insurance benefits should be based on level of need, rather than on arbitrary limits which are likely to either reduce the probability of or appropriate amount of care for youths who most need mental health services.     

The Contribution of Hope and Affectivity to Diabetes-Related Disability: An Exploratory Study

This study examined the relationships of the dispositional variables of hope, positive affectivity (PA), and negative affectivity (NA) with disease status and illness-related psychosocial functioning in a sample of 45 young adults with insulin-dependent diabetes mellitus (IDDM). Canonical analyses revealed one significant canonical function between the dispositional and psychosocial outcome variables. Primary contributors to the relationship were higher NA and lower PA and maladaptive emotional behavior. A linear multiple regression analysis using hope and affectivity as predictors failed to account for a significant proportion of variance in objective disease status as measured by hemoglobin A _1C (HbA_1C). The results support previous findings that affectivity may relate to self-reported, disease-related outcome, but not necessarily to objective measures of health status. Future studies of adaptation to chronic illness should consider including measures of illness-related behaviors (e.g., adherence), as well as subjective and objective measures of health status.     

The role of client choice and target selection in self-management therapy for depression in older adults

In a study designed to maximize the effectiveness of treatment by allowing participants to select the target of treatment, 40 depressed older adults were randomly assigned to a waiting-list control condition or to conditions in which the target of treatment was either chosen or assigned. All participants received self-management therapy and the choice was between changing behavior or changing cognition. It was found that individually administered self-management therapy was effective in treating depression for older adults. There were no differences in outcome between versions of self-management therapy that targeted behavioral or cognitive change. Among those who completed treatment, there were no differences in outcome between those who received a choice and those who did not. Individuals who were given a choice of treatment options, however, were less likely to drop out of treatment prematurely.     

大学生人格因素的性别差异研究

本研究通过对246名大学生施测16PF,分析了16种人格因素的性别差异现象。结果表明：在恃强、怀疑、幻想、紧张这四个因素上存在性别差异,表现为男生比女生更好强、固执,更爱怀疑、紧张,女生比男生更富于幻想;在世故性上,女生的变异率大于男生,女生表现出两极分化特征;经探索性因素分析结果表明,男女生所提取出的因子数量相同,但男女生的因子结构有些差异。