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This experiment compared the effects of exposure to masked phobic stimuli at a very brief stimulus-onset asynchrony on spider-phobic and non-phobic individuals. Participants were identified through a widely used questionnaire and a Behavioral Avoidance Test (BAT) with a live, caged tarantula to establish baseline levels of avoidance. One week later, they were individually administered one of two continuous series of masked images: spiders or flowers. Preliminary masking experiments showed that independent samples of participants from the same populations failed to recognize these stimuli. Participants in the main experiment reported ratings of subjective distress immediately before and after the exposure manipulation. Then they engaged in the BAT once again. Very brief exposure to images of spiders reduced phobic participants' avoidance of the tarantula. No effects were evidenced on subjective distress, or on non-phobic participants. Theoretical implications for the non-conscious basis of fear are discussed. 相似文献
184.
目的:了解高中生自我和谐总体状况、心理健康状况及其关系。方法:采用《自我和谐量表》(SCCS)和《中学生心理健康问卷》对湖南、贵州四所中学的高中生进行测量。结果:高中生自我和谐情况不太理想;高中生在不和谐因子得分与大学生常模并无显著差异,在灵活性上差异非常显著(p<0.001),在刻板性上差异显著(p<0.05);高中生自我与经验的不和谐、刻板性、自我和谐总分均与心理健康各因子呈显著正相关;自我的灵活性与心理健康总分、偏执、敌对、适应不良等呈正相关。结论:高中生自我和谐与心理健康存在显著的相关性,自我和谐对心理健康具有一定的预测作用,培养高中生的自我和谐性有助于提高其心理健康水平。 相似文献
185.
The current study uses García Coll et al.'s (1996) developmental competence model of ethnic minority children and Kim's (1999) racial triangulation theory as frameworks for investigating the mechanisms whereby early adolescent English proficiency relates to perceived discriminatory experiences and adolescent depressive symptoms. Data from 444 adolescents (239 girls and 205 boys, with a mean age of 13.0 years for Wave 1 and 17.0 years for Wave 2) and their parents living in major metropolitan areas of Northern California were collected. The structural equation modeling analyses indicate that self-reported low levels of English proficiency among Chinese American adolescents in middle school are related to these same students later reporting that they speak English with an accent in high school, which in turn relates significantly to their perceiving that they have been stereotyped as perpetual foreigners. For girls, a perpetual foreigner stereotype relates to perceptions of chronic daily discrimination, increasing the risk of depressive symptoms. For boys, the path is different: A perpetual foreigner stereotype is apparently related to discriminatory victimization experiences, which increase the risk of depressive symptoms. 相似文献
186.
Shaw JD Zhu J Duffy MK Scott KL Shih HA Susanto E 《The Journal of applied psychology》2011,96(2):391-400
The authors develop and test theoretical extensions of the relationships of task conflict, relationship conflict, and 2 dimensions of team effectiveness (performance and team-member satisfaction) among 2 samples of work teams in Taiwan and Indonesia. Findings show that relationship conflict moderates the task conflict-team performance relationship. Specifically, the relationship is curvilinear in the shape of an inverted U when relationship conflict is low, but the relationship is linear and negative when relationship conflict is high. The results for team-member satisfaction are more equivocal, but the findings provide some evidence that relationship conflict exacerbates the negative relationship between task conflict and team-member satisfaction. 相似文献
187.
卵巢肿瘤是妇科常见肿瘤之一,可分为良性、恶性、交界性肿瘤,及时处理卵巢良性肿瘤具有重要意义,但关于如何避免卵巢良性肿瘤的过度治疗,尚无定论。目前为止,关于卵巢肿瘤发生、发展机制的基础研究和诊疗技术正在取得较大的进步,对临床医师发挥着重要的指导和辅助作用。如何正确诊断卵巢良性肿瘤,如何选择合适的手术方式、实现个体化治疗,是避免卵巢良性肿瘤的过度治疗的关键。 相似文献
188.
赵婧 《医学与哲学(人文社会医学版)》2010,31(5):64-66
助产士在近代中国担当着普及现代产科知识、推行分娩卫生的重要角色.她们在助产学校中养成了职业神圣感以及以新法接生为核心的医学技能.然而,毕业后从事助产职业的状况却不容乐观.助产士的职业困境一方面来自旧式产婆的竞争,另一方面则受限于其与产科医生之间的从属关系.这在某种程度上影响了分娩卫生的推行. 相似文献
189.
Johnson AW Han S Blouin AM Saini J Worley PF During MJ Holland PC Baraban JM Reti IM 《Learning & memory (Cold Spring Harbor, N.Y.)》2010,17(12):620-626
Neuronal activity regulated pentraxin (Narp) is a secreted protein that regulates α-amino-3-hydroxyl-5-methyl-4-isoxazole-propionate receptors (AMPAR) aggregation and synaptogenesis. Mapping of Narp-positive neurons in brain has revealed it is prominently expressed in several limbic system projection pathways. Consistent with this localization pattern, Narp knockout mice show deficits in using the current value of a reinforcer to guide behavior, a critical function of the limbic system. To help assess whether this behavioral deficit is due to impairment of synaptogenesis during development or in modulating synaptic signaling in the mature brain, we have used a dominant negative Narp viral construct which blocks trafficking of endogenous Narp to axons. Focal injection of this viral construct into the medial prefrontal cortex (mPFC) of adult mice, a region containing Narp-positive projection neurons, blocked reinforcer devaluation. Thus, these results indicate that Narp released from mPFC neurons plays a key role in mediating synaptic changes underlying instrumental reinforcer devaluation. 相似文献
190.
Kees-Jan Kan Annemie Ploeger Maartje E. J. Raijmakers Conor V. Dolan Han L. J. van der Maas 《Developmental science》2010,13(1):11-27
We present a review of empirical evidence that suggests that a substantial portion of phenotypic variance is due to nonlinear (epigenetic) processes during ontogenesis. The role of such processes as a source of phenotypic variance in human behaviour genetic studies is not fully appreciated. In addition to our review, we present simulation studies of nonlinear epigenetic variance using a computational model of neuronal network development. In each simulation study, time series for monozygotic and dizygotic twins were generated and analysed using conventional behaviour genetic modelling. In the results of these analyses, the nonlinear epigenetic variance was subsumed under the non-shared environmental component. As is commonly found in behaviour genetic studies, observed heritabilities and unique environmentabilities increased with time, whereas common environmentabilities decreased. The fact that the phenotypic effects of nonlinear epigenetic processes appear as unsystematic variance in conventional twin analyses complicates the identification and quantification of the ultimate genetic and environmental causes of individual differences. We believe that nonlinear dynamical system theories provide a challenging perspective on the development of individual differences, which may enrich behaviour genetic studies. 相似文献