特里尔社会应激测试技术的介绍以及相关研究

由于能有效地诱发个体的应激反应,特里尔社会应激测试(Trier Social Stress Test,TSST)在实验室研究中受到普遍的应用。为了探测应激情境下的中央控制系统,蒙特利尔脑成像应激任务(Montreal Imaging Stress Test,MIST)对特里尔社会应激测试进行了发展和改进,为研究者提供了脑成像的研究手段。研究者基于此两种方法而进行了一系列有关应激的研究成果,在此基础上,作者提出了在中国开展实验室应激研究的可行性和初期研究方向。     

Musical expertise has minimal impact on dual task performance

Studies investigating effect of practice on dual task performance have yielded conflicting findings, thus supporting different theoretical accounts about the organisation of attentional resources when tasks are performed simultaneously. Because practice has been proven to reduce the demand of attention for the trained task, the impact of long-lasting training on one task is an ideal way to better understand the mechanisms underlying dual task decline in performance. Our study compared performance during dual task execution in expert musicians compared to controls with little if any musical experience. Participants performed a music recognition task and a visuo-spatial task separately (single task) or simultaneously (dual task). Both groups showed a significant but similar performance decline during dual tasks. In addition, the two groups showed a similar decline of dual task performance during encoding and retrieval of the musical information, mainly attributed to a decline in sensitivity. Our results suggest that attention during dual tasks is similarly distributed by expert and non-experts. These findings are in line with previous studies showing a lack of sensitivity to difficulty and lack of practice effect during dual tasks, supporting the idea that different tasks may rely on different and not-sharable attentional resources.     

Prevalence of anxiety symptoms and disorders in the transgender population: A systematic review of the literature

Introduction: Anxiety disorders are the most common mental illness in the general population, affecting 18% of the population in the United States (12 months prevalence) and 13.6% in Europe (life time prevalence). Several studies have also described high rates of anxiety disorders and symptoms of anxiety among the transgender population. There is, however, a great variation of results (particularly related to gender prevalence), and few studies have described the type of anxiety disorders specific to the transgender population.

Aim: To collect and critically appraise the information from the available studies describing prevalence rates of anxiety disorders and symptoms.

Results: A total of 25 cross-sectional (n = 17) and longitudinal (n = 8) studies were found. Cross-sectional studies described higher prevalence rates of anxiety symptoms in the transgender group than in the cis population. The prevalence of anxiety disorders range from 17% to 68%. The most common anxiety disorders found were specific phobias, social phobias, panic disorders, and obsessive-compulsive disorders. Most of the large studies suggest higher levels of anxiety symptoms and disorders in transgender men compared with transgender women; however, considerable variation in results was found.

Conclusions: The findings identified that there is considerable variation in anxiety disorders and symptoms among transgender people attending transgender health services. These findings are likely to be the result of the tools used, the lack of matching controls, and the lack of homogeneity of the group studied. Overall this review indicates high levels of anxiety symptoms and disorders among transgender people attending gender services, primarily (but not exclusively) before commencement of cross-sex hormone treatment. Anxiety disorders related to social interaction (such as social anxiety) and panic attack appear to be particularly common, however more rigorous studies to confirm those findings are needed.     

Associations between lower order anxiety sensitivity dimensions and DSM-5 posttraumatic stress disorder symptoms

Anxiety sensitivity (AS), a well-established individual difference variable reflecting a tendency to fear bodily sensations associated with arousal, has been implicated in the development and maintenance of posttraumatic stress disorder (PTSD). Despite these associations, little research has examined the relations between AS subfactors (eg physical, cognitive, and social) and PTSD symptoms and none have examined these associations in the context of DSM-5 (Diagnostic Statistical Manual of Mental Disorders, Fifth Edition) PTSD clusters (ie intrusion, avoidance, negative alterations in cognitions/mood, and arousal). Participants included 50 veterans presenting to an outpatient Veteran Affairs Clinic for psychological services. Upon intake, veterans completed a brief battery of self-report questionnaires to assist with differential diagnosis and treatment planning. Results revealed unique associations between lower order AS dimensions, in particular the cognitive concerns dimension, and all four DSM-5 PTSD symptom clusters. Given the malleable nature of AS cognitive concerns, as well as the growing number of veterans in need of care, future research should determine the extent to which targeting this cognitive risk factor reduces PTSD symptom severity among veterans.     

测验相对拟合检验方法CVLL法在认知诊断中的拓展及应用

本文将IRT中表现较好的CVLL法引入到认知诊断领域,同时比较并分析CVLL及认知诊断领域已有的测验相对拟合检验统计量的表现,为实际工作者在认知诊断模型选用上提供方法学支持和借鉴。结果表明:CVLL的表现比其它传统测验相对拟合统计量要好;且当对Q矩阵进行误设时,该统计量也能选择较优的Q矩阵,说明CVLL在Q矩阵侦查上有较好的应用前景。     

时间对犯罪隐藏信息记忆的影响

记录模拟犯罪者和阅读报纸后对案件知情的无辜者接受隐藏信息测试时的皮肤电活动,探讨时间对犯罪隐藏信息记忆的影响。结果发现：(1)延迟条件下,模拟犯罪组的再认率和皮肤电活动变化显著高于知情无辜组,但两组在立即条件下无差异;(2)知情无辜组在延迟条件下的甄别率显著低于立即条件下,而模拟犯罪者在两种条件下无差异。结果表明,延迟测试比立即测试更容易区分模拟犯罪组和知情无辜组;犯罪甄别率在延迟条件下减少,但也减少了知情无辜者被判断为犯罪者的风险。     

Obsessive-Compulsive and Depressive Symptoms: The Role of Depressive Cognitive Styles

Obsessive-compulsive disorder (OCD) commonly co-occurs with depression, resulting in heightened severity and poorer treatment response. Research on the associations between specific obsessive-compulsive symptoms (OCS) and depressive symptoms has utilized measures that have not fully considered the relationship across OCS dimensions. Little is known about which factors explain the overlap between OCS and depressive symptoms. OCS and depressive symptoms may be related via depressive cognitive styles, such as rumination or dampening (i.e., down-regulating positive emotions). We evaluated the associations of OCS dimensions with depressive symptoms and cognitive styles. We also examined the indirect effects of rumination and dampening in the relationship between OCS and depressive symptoms. Participants (N = 250) completed questionnaires online. Greater depressive symptoms, rumination, and dampening were associated with greater levels of all OCS dimensions. Path analysis was utilized to examine a model including the direct effect of depressive symptoms on overall OCS and two indirect effects (through rumination and dampening). There was a significant indirect effect of depressive cognitive styles on the relationship between OCS and depressive symptoms, through rumination and dampening. Replication in a clinical sample and experimental manipulations may bear important implications for targeting depressive cognitive styles in treatments for OCD and depression.     

Cognitive trait anxiety,stress and effort interact to predict inhibitory control

Few studies have focussed on the link between anxiety and inhibitory control in the absence of stimulus-driven external threat. This two-part experiment examined the interactions between (1) somatic trait anxiety, somatic situational stress (i.e. threat of electric shock), and effort, and (2) cognitive trait anxiety, cognitive situational stress (i.e. ego-threat instructions), and effort, on inhibitory processes using a Go-No-Go paradigm. Trait anxiety was operationalised using questionnaire scores and effort was operationalised using a visual analogue scale. Performance effectiveness was measured using the d′ parameter from signal detection theory and processing efficiency was indexed by the ratio of d′ to response time on correct trials. Results indicated that somatic trait anxiety and stress did not predict effectiveness or efficiency. Cognitive trait anxiety and stress were associated with both inhibitory effectiveness and efficiency deficits; however, contrary to expectations these deficits were evident at higher rather than lower mental effort. Results suggest a distinction between how somatic and cognitive anxiety manifest on tasks involving inhibitory control.