自尊稳定性的认知神经机制

自尊稳定性(自尊在短期内波动的幅度)是一种具有重要心理功能的人格特质, 它既不同于自尊水平, 也区别于情境性自尊, 但在理论和测量上却与后两者具有密不可分的联系。然而, 由于目前人们对于自尊稳定性的认知神经机制知之甚少, 所以并不清楚它与自尊水平在生理机制上的关系是什么, 更不了解它会如何调节情境性自尊。鉴于此, 本研究计划将自尊稳定性、自尊水平和情境性自尊置于整合的认知神经加工模型(神经内分泌-脑-行为)之中, 通过融合心理测量、脑成像与应激诱发等多种技术指标, 力争全方位、多角度揭示自尊稳定性的认知神经机制, 及其与自尊水平、情境性自尊间的区别和联系。     

Parvalbumin阳性中间神经元缺陷在精神分裂症病理机制中的作用

精神分裂症是一种多发于青壮年的重性精神病, 其原因尚不明确。经典的多巴胺缺陷理论假说在某些方面欠缺解释力; 与此同时, 关于Parvalbumin阳性的中间神经元(后简称PV+神经元)缺陷在精神分裂症病理机制中的作用逐渐明晰, 并引起了越来越多的关注。PV+神经元在绝大部分脑区中是一种快速放电的抑制性神经元, 参与了突触可塑性的调节, 兴奋/抑制平衡的维持和神经发生等。而在精神分裂症中, PV+神经元的异常在患者和动物研究中都被普遍证实, 并发现与 NMDA受体缺陷、gamma波异常和氧化应激存在某些关联。     

The interaction between baseline trait anxiety and trauma exposure as predictor of post-trauma symptoms of anxiety and insomnia

In this study a prospective design was used to investigate the interaction between baseline trait anxiety and exposure to traumatic situations on post-trauma symptoms of anxiety and insomnia in a sample of Swedish peacekeeping soldiers serving in Kosovo. The result showed that pre-trauma trait anxiety interacted with exposure to traumatic situations predicting a higher post-trauma distress. Further, baseline trait anxiety and baseline symptoms of anxiety and insomnia predicted post-trauma symptoms of anxiety and insomnia. The results support a diathesis stress model in which high trait anxiety interacts with trauma exposure in the elicitation of anxiety-related distress but the study needs to be replicated before further conclusions can be drawn.     

Predicting Different Patterns of Sexual Identity Development Over Time Among Lesbian, Gay, and Bisexual Youths: A Cluster Analytic Approach

Recent research has suggested that the sexual identity development of lesbian, gay, and bisexual (LGB) youths may not follow a single pattern, but may follow a variety of pathways. Although some research documenting variability in identity development exists, unclear are the potential individual and social contexts that predict these different patterns, as well as the contexts that predict changes in identity integration over time. This report longitudinally examined these issues in an ethnically diverse sample of 156 LGB youths (ages 14-21) in New York City. Cluster analytic techniques identified two patterns of sexual identity formation (i.e., early and more recent), and three patterns of sexual identity integration (i.e., high, middling, and low). Gender and sexual abuse were found to predict identity formation; and, gay-related stress, social support, negative social relationships, sexual orientation, sexual identity, and gender were found to predict patterns of sexual identity integration and changes in integration over 1 year. These findings document different patterns of sexual identity development and identify potential contextual barriers and facilitating factors that may be used to develop interventions to promote healthy LGB identity development.     

Post-Traumatic Reactions in Adolescents: How Well Do the DSM-IV PTSD Criteria Fit the Real Life Experience of Trauma Exposed Youth?

This study examined the structure and symptom specific patterns of post traumatic distress in a sample of 1,581 adolescents who reported exposure to at least one traumatic event. Symptom reporting patterns are consistent with past literature in that females reported more symptoms than males and older youth reported more symptoms than did their younger peers. Young people reporting exposure to exclusively violent type traumas were also found to be more likely to endorse symptoms than peers exposed exclusively to non violent type traumas. Confirmatory factor analysis provided stronger support for a four-factor model of PTSD than either the DSM-IV model or an alternate model. Further examination of the four factor model revealed gender differences in factor loadings with small to moderate effect sizes for recurrent, distressing memories, flashbacks, restricted affect, difficulty remember details, detachment, limited future orientation, hypervigilance and startle symptoms. Differences in factor loadings with the four factor model were also noted between younger and older adolescents, with medium to large effect sizes on the arousal items. In contract, comparison of the factor loadings revealed only small differences between youth exposed exclusively to violent traumatic stressors and those exposed exclusively to non violent traumatic stressors, suggesting relative similarity between these two groups.     

少数民族压力应对研究的文化视角

随着社会的急剧变迁与多元文化的相互融合与碰撞, 少数民族的压力应对问题已经变得日益重要。对少数民族压力应对与文化的关系进行全面的审视与探讨, 能够更好地理解多元文化交融下少数民族压力应对的心理机制, 促进民族团结与社会和谐。文章总结了少数民族压力应对研究的4种文化视角, 包括压力应对的跨文化研究、文化适应的压力应对研究、宗教应对研究、中国传统文化的应对思想研究, 并对不同研究视角进行了评述。未来中国少数民族压力应对研究应该综合多学科、多元文化视角的研究思路, 加强量与质的研究范式的整合, 进一步扩展少数民族压力应对的研究领域与研究范围, 从我国民族地区社会变迁的实际情况出发, 加强对少数民族不同社会群体的压力应对研究。     

成瘾与应激的关系及治疗

成瘾严重危害个体的心身健康,造成许多家庭和社会问题。成瘾与应激有着密切的关系。最新研究发现下丘脑-垂体-肾上腺（HPA）轴、促肾上腺皮质激素调节因子（CRF）和糖皮质激素在成瘾与应激中发挥重要作用。由于对成瘾和应激的机制尚未完全阐明,目前无特效治疗。采取缓解应激源、预防精神活性物质的使用、预防复发、让患者回归社会等综合措施使复发率明显降低。     

Exploring Correlates and Predictors of Stress in Parents of Children Who are Deaf: Implications of Perceived Social Support and Mode of Communication

Parenting stress has been linked to negative outcomes for both parents and children, including poor attachment, behavior problems, less positive parent–child interactions, and marital dissatisfaction. Given that parents of special needs children often experience excess stress, they may be susceptible to negative outcomes, thus investigations of protective factors are needed. We explored relationships among parenting stress, social support, mode of communication, and child cochlear implant status in parents rearing a deaf child or child with hearing loss. Findings of our exploratory study indicated that parents of children who use sign language only reported more support, while parents of children who use total communication exhibited less self-reported stress. Also, parents with children who use implants did not differ on any of the measures compared to parents of children without implants. Additional findings suggested that higher levels of perceived social support corresponded with lower stress among parents, however, receipt of supportive behaviors did not correlate significantly with parenting stress. In an overall model, perceived social support and mode of communication were significant predictors of parenting stress. Finally, enacted support predicted significantly life satisfaction in parents. Implications and limitations, as well as suggestions for future research, will also be offered.     

Impact of Tourette’s Disorder on Parent Reported Stress

We examined the relationship between Tourette’s Disorder (TD) and parent reported stress. About 84 parents of children with TD participated by completing questionnaires assessing parental stress, TD symptom severity, co-morbid disorders, services received by the child, and parents’ perception of their child’s academic ability. The results indicate that parent reported stress reached clinically significant levels when a co-morbid disorder was present, but not with a diagnosis of TD alone. Similarly, parents report higher levels of stress when they view their child as performing below other students academically. Finally, the types of services that the child receives were found to have little or no relationship to parent reported stress. Limitations of this study, directions for future research, and implications for intervention are discussed.     

Mood induced cognitive and emotional reactivity, life stress, and the prediction of depressive relapse

This study examined a group of participants who were fully remitted from a previous episode of major depressive disorder, and evaluated the role of cognitive and emotional reactivity to a mood challenge, and life stress in the prediction of relapse. Fifty-two participants were evaluated during remission, and their reactivity (i.e., change in dysfunctional attitudes and emotional state) to a depressed mood induction was evaluated. The cohort was followed up 12 months after the initial assessment. Thirty-five percent of the sample experienced a relapse during the follow-up period. Relapse was predicted by higher rates of life stress, and lower levels of emotional reactivity (specifically less reduction in happiness) to the mood induction during the initial assessment. Cognitive reactivity to the mood induction did not predict relapse, nor did the interaction between cognitive reactivity and life stress. These findings are discussed in terms of recent literature suggesting that depression is associated with insensitivity to emotion context, such that depressed individuals display blunted emotional responses to affective stimuli, including sadness-inducing stimuli. These findings suggest that insensitivity to emotional context may also be a characteristic of euthymic individuals at risk of relapse.