冲动性对吗啡诱导的条件性位置偏爱及行为敏感化的影响

许多研究显示, 冲动性与尼古丁、可卡因、海洛因等药物成瘾显著相关, 但它对吗啡成瘾的影响尚未见到报道。本实验考察冲动性对吗啡诱导的条件性位置偏爱及行为敏感化的影响。实验采用延迟奖赏模型将大鼠的冲动性区分为高、中、低三个水平, 每个水平设置吗啡处理组和盐水处理组。结果发现：动物对吗啡诱导的条件性位置偏爱的程度表现为低冲动组>中冲动组>高冲动组, 并且中、低冲动组动物形成了条件性位置偏爱而高冲动组没有形成这种偏爱; 在行为敏感化表达期, 与相应的盐水组比较, 高、中冲动组动物的吗啡运动激活效应显著, 而低冲动组没有达到显著水平。这些结果提示, 条件性位置偏爱任务中, 动物的冲动性越高, 吗啡的强化效应越低; 行为敏感化任务中, 动物的冲动性越高, 吗啡的运动激活效应越高。由此可见, 动物的冲动性对吗啡诱导的条件性位置偏爱及行为敏感化的影响存在差异。     

抑郁情绪大学生反应抑制的眼动特点

本研究采用反眼动实验范式,通过BDI和 SDS量表筛选11名抑郁情绪组和12名正常对照组被试,以高兴、中性和悲伤面孔图片作为实验材料,旨在探讨抑郁情绪大学生对情绪刺激的眼动抑制能力。结果发现：抑郁情绪组的正确眼跳反应时慢于正常组;反朝向眼跳任务中,抑郁情绪组在情绪面孔图片,尤其是悲伤面孔图片上的错误率比正常组高。研究表明,抑郁情绪个体的认知加工速度慢于正常个体,且对情绪面孔,尤其对悲伤面孔存在抑制缺陷。     

Execution and pauses in writing narratives: processing time, cognitive effort and typing skill

At the behavioural level, the activity of a writer can be described as periods of typing separated by pauses. Although some studies have been concerned with the functions of pauses, few have investigated motor execution periods. Precise estimates of the distribution of writing processes, and their cognitive demands, across periods of typing and pauses are lacking. Furthermore, it is uncertain how typing skill affects these aspects of writing. We addressed these issues, selecting writers of low and high typing skill who performed dictation and composition tasks. The occurrences of writing processes were assessed through directed verbalization, and their cognitive demands were measured through interference in reaction times (IRT). Before writing a narrative, 34 undergraduates learned to categorize examples of introspective thoughts as different types of activities related to writing (planning, translating, or revising). Then, while writing, they responded to random auditory probes, and reported their ongoing activity according to the learned categories. Convergent with previous findings, translating was most often reported, and revising and planning had fewer occurrences. Translating was mostly activated during motor execution, whereas revising and planning were mainly activated during pauses. However, none of the writing processes can be characterized as being typical of pauses, since translating was activated to a similar extent as the other two processes. Regarding cognitive demands, revising is likely to be the most demanding process in narrative writing. Typing skill had an impact on IRTs of motor execution. The demands of execution were greater in the low than in the high typing skill group, but these greater demands did not affect the strategy of writing processes activation. Nevertheless, low typing skill had a detrimental impact on text quality.     

Mexican American Adolescents’ Cultural Orientation, Externalizing Behavior and Academic Engagement: The Role of Traditional Cultural Values

This study of 598 7th grade students of Mexican origin examined the role of traditional cultural values as a mediator of the effects of immigrant status, Mexican cultural orientation and Anglo cultural orientation on adolescent externalizing behavior and academic engagement. Immigrant status of adolescents and their maternal caregivers uniquely predicted increased Mexican cultural orientation and decreased Anglo cultural orientation, and both Mexican and Anglo cultural orientation related positively to adolescents’ endorsement of traditional cultural values. Endorsement of traditional cultural values related, in turn, to decreased externalizing behaviors and increased academic engagement and these findings were replicated across adolescent and teacher report of these two outcomes. Tests of mediation provided further evidence to support these pathways. Findings support the central importance of traditional cultural values as a protective resource that explains why immigrant youth exhibit fewer externalizing problems and increased academic engagement when compared to their second and third generation peers.     

Interpersonal relations as a source of risk of mobbing in the local police

Social relations in the workplace are one of the main sources of risk for the onset of mobbing. In this work, we analyzed, through the perceived social climate, the influence of interpersonal relations on the characterization of the processes of mobbing, in a sample of local police (N = 235). In particular, the policemen and women's opinions of the quality of the personal relations among the group members and the treatment they receive from the command posts were assessed. The results of the study show that the development of guidelines of social interaction based on discrimination and abuse of authority are predicting variables of mobbing in this group.     

7～9岁儿童失言理解与执行功能的关系

为了说明学龄儿童心理理论与执行功能的关系,研究采用失言理解、威斯康星卡片分类和汉诺塔任务分别考察了90名7—9岁儿童的心理理论和执行功能。结果表明,失言理解与抑制-转换能力相关显著（r=0．34,P〈0．01）,但是与计划能力相关不显著（r=0．06,P〉0．05）。在控制年龄后,失言理解与抑制-转换能力的相关仍然显著（r=0．29,P〈0．05）。研究结果说明,学龄儿童心理理论与执行功能的相关模式与学龄前儿童完全一致,提示心理理论与执行功能的相关关系从学龄前延续到了学龄阶段。     

团队人格组成、团队过程对团队有效性的作用

由于团队对组织的重要性,团队有效性的研究倍受关注。通过对342个大学生短期团队完成决策任务的研究,旨在探讨团队人格组成与团队中间过程对团队有效性的作用机制。研究以自陈式问卷调查收集数据,采用层次回归与结构方程模型进行统计分析。研究结果表明：团队过程变量（协作、信念、凝聚力）在团队人格组成（外向性、宜人性、神经质）与团队有效性之间起中介作用,横断研究的I-P-O整体模型得到验证     

The Family Life and Adjustment of Hmong American Sons and Daughters

We examined gender differences in intergenerational family conflict and its associations with psychological and academic adjustment using a United States sample of 121 Hmong American first-year college students. Hmong women and men reported similar levels of family conflict. Family conflict was related to psychological distress, above and beyond neuroticism. Gender moderated the relationship between family conflict and substance usage and academic performance. For Hmong college men, higher family conflict was associated with lower rates of smoking and higher rates of completing the first year of college. For Hmong college women, higher family conflict was associated with greater likelihood of alcohol consumption in their lifetime.     

Customer Satisfaction and Switching Barriers: Effects on Repurchase Intentions,Positive Recommendations,and Price Tolerance1

The current article attempts to extend previous research by testing the effects of customer satisfaction and 2 types of switching barriers—negative and positive—on key manifestations of attitudinal loyalty (repurchase intentions, positive recommendations, and price tolerance). The work also studies whether the effect of customer satisfaction is linear or nonlinear. Finally, the paper analyzes whether switching barriers moderate the relative strength of the customer satisfaction/attitudinal loyalty relation. To this end, a total of 554 private mobile‐phone customers were surveyed. The distinction between negative and positive switching barriers is important to draw theoretical and managerial implications.     

不同分类水平自然类概念的实例效应

采用Heit和Barsalou的实验范式,以不同分类水平的中文语义自然类概念为实验材料验证实例效应。研究包括2个实验,被试为180名全日制在校大学生。实验1为无修饰词概念的典型性研究．结果表明人们不仅在抽象的水平上表征概念,也在具体的实例水平上表征概念。实验2用不同分类水平的自然类概念检验了在更广泛的概念范围内的实例效应,结果表明,不同分类水平的下位概念和下位概念实例在上位概念中的平均典型性大多显著相关,而且下位概念的实例在不同分类水平上位概念中（如：动物、小动物）的变化趋势和下位概念在不同分类水平上位概念中的变化趋势一致。实验1和实验2的结果均支持了Heit和Barsalou提出的实例效应。