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The current study examined psychosocial predictors of change in intercourse frequency and number of sexual partners among youth within a socio-ecological framework and assessed whether these determinants vary by stage of adolescent development. Longitudinal data were derived from a large, community study of adolescent risky behavior among predominantly high-risk, African American youth. Significant predictors of intercourse frequency for early adolescents included age, gender, self-worth, and familial factors; for older youth, age, gender, self-worth, curfews, and sense of community exerted significant effects. Among early adolescents, age, gender, self-worth, familial factors, and sense of community predicted change in the number of sexual partners in the previous year, while age, gender, self-worth, parental knowledge, curfews, and sense of community were predictive of change in the number of sexual partners in the previous year among older youth. Study implications and future directions are discussed.  相似文献   
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In these two studies, we examined whether the inferences people make about likable and dislikable targets align with the predictions of balance theory. We hypothesized that people exhibit a liking-similarity effect by perceiving greater similarity with a likable person than a dislikable person. To test this hypothesis, we manipulated the likability of a target person and then assessed participants’ perceptions of similarity to that target person. In both studies, people rated likable others as more similar to themselves than dislikable others across a variety of domains (e.g., attitudes, personality characteristics, behaviors). In Study 2, individual differences in self-concept clarity, self-esteem, and preference for consistency moderated the liking-similarity effect.  相似文献   
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Psychological well-being correlates positively with psychological need satisfaction—primarily the needs of autonomy, competence, and relatedness. The current study explores momentary happiness (defined as experienced enjoyment minus experienced stress over the course of an hour) as a function of momentary psychological need satisfaction. Results demonstrate that hour-by-hour ratings of psychological need satisfaction were correlated with momentary happiness, with individual differences in life satisfaction moderating this relationship. Ratings of autonomy and relatedness correlated positively with momentary happiness, while competence was negatively correlated with momentary happiness. Thus, engagement in competence-promoting behaviors may come at an affective cost, at least in the moment. When autonomy and relatedness needs were met, individuals with high levels of life satisfaction experienced greater increases in happiness than individuals with low levels of life satisfaction. This finding supports a sensitization model of well-being. Results are discussed with respect to their implications for self-determination theory (SDT).  相似文献   
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The neural mechanisms used in tone rises and falls in Mandarin were investigated. Nine participants were scanned while they named one-character pictures that required rising or falling tone responses in Mandarin: the left insula and right putamen showed stronger activation between rising and falling tones; the left brainstem showed weaker activation between rising and falling tones. Connectivity analysis showed that the significant projection from the laryngeal motor cortex to the brainstem which was present in rising tones was absent in falling tones. Additionally, there was a significant difference between the connection from the insula to the laryngeal motor cortex which was negative in rising tones but positive in falling tones. These results suggest that the significant projection from the laryngeal motor cortex to the brainstem used in rising tones was not active in falling tones. The connection from the left insula to the laryngeal motor cortex that differs between rising and falling tones may control whether the rise mechanism is active or not.  相似文献   
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While research indicates that Black and Hispanic adults sentenced in the criminal court tend to be rendered more severe punishments than their White counterparts, only one prior study has examined whether this finding holds for juveniles tried in the adult system. The findings from this sole study need replication, however, since the effects posed by trial type were not taken into account and it is likely that the results are confounded by measurement error resulting from overlap in criminal sentencing. The current study addressed these issues by assessing whether race has a direct impact on waived juveniles being criminally sentenced to restitution, probation, or jail. Data were derived from a secondary, cross‐sectional national dataset on felony juvenile offenders convicted in the adult system. Three hypotheses were tested. After controlling for a number of important legal and extra‐legal predictors of sentencing, race differences in sentencing outcomes were observed and the findings yielded partial support for the hypotheses. The implications of the research are noted. Copyright © 2012 John Wiley & Sons, Ltd.  相似文献   
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The purpose of this study was to understand the context of suicide in master's level counselling courses in Australia. The sample comprised courses accredited by the Australian Counselling Association (ACA) and the Psychotherapy and Counselling Federation of Australia (PACFA). A mixed methods content analysis was used to identify the explicitness of suicide in these courses and identify themes that emerged during the analysis. The sample consisted of 405 units of study contained in 26 courses. Suicide was explicit in 23 units in 17 courses. Suicide content was overshadowed by cultural diversity, ethics, morality and philosophy, research and self-awareness, which was explicit in all 26 courses.  相似文献   
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