社会支持对震后青少年创伤后应激障碍和创伤后成长的影响:自我效能感的中介作用

本研究采用创伤暴露问卷、社会支持问卷、自我效能感量表、创伤后应激障碍症状核查表和创伤后成长问卷,在汶川地震8.5年后对地震极重灾区的1185名中学生进行调查,考察社会支持对创伤后应激障碍（PTSD）和创伤后成长（PTG）的影响,并检验自我效能感在其中的中介作用。结果发现：在控制创伤暴露程度、性别和年龄等变量后,社会支持不仅可以直接负向预测PTSD、正向预测PTG,也可以通过自我效能感的中介作用负向预测PTSD、正向预测PTG。这表明,自我效能感在社会支持与PTSD、社会支持与PTG的关系中都具有部分中介效应。     

Bystander Responses to Risk for Rape Perpetrated by a Friend,Acquaintance, or Stranger

This study explored bystander responses to risk for an alcohol-facilitated rape perpetrated by a friend, acquaintance, or stranger. Undergraduates (N = 331) were randomly assigned to read 1 of 3 scenarios in which an apparently sober male friend, acquaintance, or stranger leads an intoxicated woman into a bedroom. Participants completed self-report measures of intent to directly intervene and barriers to intervention. Compared to men, women reported greater intent to help the potential victim and fewer barriers to intervention. Participant gender moderated the effect of the bystander’s relationship with the potential perpetrator on intent to confront and responsibility to intervene. Men reported more confrontation and more responsibility to intervene when perpetrators were identified as either friends or acquaintances than strangers. In contrast, women reported more confrontation when perpetrators were identified as friends than either strangers or acquaintances. Bystander education programs that address specific barriers to intervening with strangers and acquaintances could promote more frequent bystander behavior.     

When Do Motives to Sexually Please a Male Partner Benefit Women’s Own Sexual Agency?

Motivation to please a partner sexually, also known as sexual communal strength (SCS), has been positively associated with sexual and relationship functioning, particularly for partners. We used a critical sexuality studies approach to examine SCS as it relates to women’s own sexual agency. We also examined the potential moderating role of partner sexual coercion, defined as persistent pressure to attain sex. Specifically, we investigated whether frequency of partner sexual coercion moderates the effect of SCS on three different aspects of women’s sexual agency: sexual desire, sexual refusal assertiveness, and relational power. Participants were 172 U.S. women in dating relationships with men who responded to self-report measures. Results showed that SCS was positively related to women’s own sexual desire, regardless of how often women experienced partner sexual coercion. SCS and partner sexual coercion frequency were associated with sexual refusal assertiveness: The least assertive women reported both higher SCS and more frequent partner coercion. Sexual coercion frequency was negatively related to women’s relational power, regardless of their own SCS. These findings support educational and clinical interventions to reduce sexual coercion and suggest the concept of SCS be further refined to better account for the potential roles sexual coercion and heterosexual norms play more broadly.

     

Discrepant Self-Views and Young Women's Sexual and Emotional Adjustment

Young women in the United States receive conflicting messages about being sexually moral versus sexually desirable. Drawing from self-discrepancy theory, we hypothesized that women's internalization of messages about morality and desirability influence their ought and ideal self-guides for sexuality, respectively. Further, we expected that women who viewed their actual selves as significantly less positive/more negative than their self-guides would endorse greater sexual and emotional problems. In Study 1, never-married undergraduate women (N = 242) completed measures of sexual self-views, ought self-guides, and sexual adjustment. In Study 2, another sample (N = 170) also completed measures of ideal self-guides, depression, and anxiety. Participants were predominantly Caucasian and from upper middle-class backgrounds. Both negative actual:ought and actual:ideal discrepancies were associated with poorer sexual adjustment. Negative actual:ought discrepancies were associated with anxiety but not depression, whereas negative actual:ideal discrepancies were associated with both anxiety and depression. Self-discrepancy theory is a useful framework for understanding how self-standards for sexual morality versus desirability are associated with young women's emotional and sexual adjustment.     

PSYCHOLOGICAL ABUSE, SELF-ESTEEM, AND WOMEN'S DATING RELATIONSHIP OUTCOMES

Self-verification theory implies that people with negative self-views may be drawn to abusive partners who mistreat them. However, abusive partner behavior differs from the types of partner feedback typically examined within a self-verification framework, which could render generalization to abuse problematic. We propose that self-enhancement theory better accounts for the effects of abuse on relationship outcomes. Self-enhancement theory suggests that people are drawn to others who treat them favorably, regardless of people's own self-views. We investigated the effects of abusive feedback from dating partners, relative to women's Self-esteem levels, on relationship intimacy and stability. Predictions based on both self-verification and self-enhancement theories were tested cross-sectionally and with a subsample of women 6 weeks after the initial assessment. Results were most consistent with self-enhancement theory; partner abuse was related to lesser relationship stability and intimacy. More limited support was obtained for self-verification theory. Importantly, women with lower self-esteem did not endorse greater stability or intimacy as a function of receiving psychological abuse. We conclude that self-enhancement theory better explains the link between psychological abuse and relationship outcomes, although self-verification theory may account for reactions to other types of partner behavior.     

Modeling pedagogical interactions with machine learning

Zusammenfassung. Dieser Artikel beschreibt einen Ansatz zur Codierung und Analyse pädagogischer Interaktionen zwischen Lernenden und Experten im Bereich der Luftfahrt-Technik im Rahmen einer intelligenten tutoriellen Lernumgebung zur Fehlererkennung und -behebung (Sherlock 2). Es werden zwei prototypische maschinelle Lernverfahren dargestellt, welche bei der Analyse eines Corpus von Dialogprotokollen eingesetzt werden. Die Verfahren generieren der Diskursstruktur möglichst gut entsprechende Grammatiken. Die gefundenen Grammatiken führten zu neuen Einsichten hinsichtlich der Funktion bestimmter Sprechakte in tutoriellen Dialogen sowie zu klaren und präzisen Modellen von Erklärungsdialogen bei Diagnoseproblemen. Summary. This paper describes our approach to coding pedagogical interactions that took place between avionics students and domain experts in an ITS for electronic troubleshooting called Sherlock 2. We also describe prototype machine learning systems that we developed to learn grammars of discourse structure. The grammars revealed instructional functions of particular speech acts that we had not been aware of, and provided concise models of explanations common in diagnostic tasks.     

创伤后应激障碍的动物模型及其神经生物学机制

创伤后应激障碍是指个体由于经历对生命具有威胁的事件或严重的创伤,导致症状长期持续的精神障碍。研究创伤后应激障碍的主要动物模型为条件性恐惧和应激敏感化模型。研究表明,创伤后应激障碍中长时程留存的恐惧性记忆、高唤醒等症状与大脑杏仁核、内侧前额叶皮层和海马三个脑区及下丘脑-垂体-肾上腺轴负反馈功能增强密切相关。其中杏仁核活动增强是条件性恐惧记忆获得、保持和表达的关键神经基础。内侧前额叶皮层对杏仁核的去抑制及海马向杏仁核传递的威胁性环境信息,促进创伤后应激障碍症状的出现。在经历创伤应激后糖皮质激素受体的上调及多巴胺活动的增强是创伤后应激障碍产生的主要神经基础。对创伤后应激障碍的药物治疗研究证明多巴胺D2受体在改善患者症状中的作用比较重要,但仍需作更深入的探索     

Internal consistency reliability and validity of the Hebrew translation of the Oxford Happiness Inventory

The Hebrew translation of the Oxford Happiness Inventory and the short form Revised Eysenck Personality Questionnaire were completed by 298 undergraduate women in Israel. The findings confirm the internal reliability of the Hebrew translation of the Oxford Happiness Inventory and support the construct validity according to which "happiness is a thing called stable extraversion."