Simulating demand for cigarettes among pregnant women: A Low‐Risk method for studying vulnerable populations

A substantive obstacle to experimentally studying cigarette smoking and use of other tobacco products in pregnant women is the risk of adverse effects on mother and fetus from experimenter administration of the product of interest. The purpose of this study is to investigate bypassing that obstacle by using behavioral economic simulation tasks. In the present study we used the Cigarette Purchase Task (CPT) to simulate changes in demand for hypothetical cigarettes as a function of varying cigarette prices. Participants were 95 pregnant women who completed the CPT prior to participation in a smoking‐cessation trial. Aggregate and individual participant demand varied as an orderly function of price and those changes were well fitted by an exponential equation. Demand also varied in correspondence to two well‐validated predictors of individual differences in smoking cessation among pregnant women (cigarettes smoked per day, pre‐pregnancy quit attempts). Moreover, CPT indices were more effective than these two conventional variables in predicting individual differences in whether women made a quit attempt during the current pregnancy. Overall, these results represent a promising step in demonstrating the validity and utility of the CPT for experimentally examining demand for cigarettes, and potentially other tobacco and nicotine delivery products, among pregnant women.     

Self-esteem: Its mediating effects on the relationship between discrimination at work and employee organisation commitment and turn-over intention

This study examined self-esteem as a mediator of the relationship between perceived discrimination, employee intentions to quit, and affective organisation commitment. A convenience sample of 414 South African employees were participants (female?=?44.9%; black?=?42.3%; 38.2% between the age of 26 and 35). Of the participants, 72.7% were from the private sector. The employees completed measures of self-esteem, perceived discrimination, and affective organisation commitment. We utilised Structural Equation Modelling to determine the direct and indirect effects of self-esteem on employee attitudes, affective organisation commitment, and intentions to quit. Findings indicate that high self-esteem scores predict affective organisation commitment by ameliorating a sense of work-place discrimination. This is influenced by race, ethnicity, and gender. By contrast, low self-esteem scores predicted high intensions to quit due to perceived work-place discrimination. As such, high self-esteem is important for the reduction of the perceived work-place discrimination effects on affective organisation commitment and for job retention among workers of a society with a history of race-based civil strife.     

尝试提取复杂信息失败的学习：吃一堑长一智？

摘 要：在学习中,提取失败能否产生对知识的有效学习是一个很有意义的研究课题。以事实和概念类知识为实验材料,三个实验采用经典范式探讨了复杂意义条件下的提取失败后的学习效果。结果显示仅在尝试提取事实类题目失败后,促进了知识的保持和迁移;在迁移成绩上延时反馈优于即时反馈的效果。表明尝试提取复杂材料的信息失败后,知识的类型和反馈的时机决定了学习效果。     

Clarifying the Relationship of Dissociative Experiences to Suicide Ideation and Attempts: A Multimethod Examination in Two Samples

Fears of pain, injury, and death may represent key barriers to acting on suicidal thoughts. Dissociation, which involves a disconnection from one’s body, may reduce fears and sensations of pain associated with harming the body, in turn facilitating suicide attempts. This study examined whether dissociation differentiated individuals with a history of suicide attempts from those with a history of suicide ideation, and investigated whether other relevant constructs explain this relationship. Sample 1 included 754 undergraduates (M_age = 21, 79% female) who completed a battery of self-report measures. Sample 2 included 247 undergraduates (M_age = 19, 74% female) who completed a self-report measure of dissociation, a clinical interview regarding suicide history, and four counterbalanced behavioral pain tolerance tasks. In both samples, dissociation was elevated in lifetime attempters compared to ideators (d = 0.28; d = 0.46; ps = 0.01) and slightly elevated in lifetime ideators compared to nonsuicidal individuals (d = 0.19, p = .02; d = 0.24, p = .47), though this effect was non-significant in the latter sample. In Sample 1, dissociation no longer differentiated attempters from ideators after controlling for clinical covariates. In Sample 2, dissociation was unrelated to behavioral pain tolerance tasks, and these tasks did not account for the association between dissociation and attempts. Overall, dissociation differentiated individuals with a history of suicide attempts from those with ideation alone in both samples. Pain tolerance did not explain this association; instead, it is possible that the relationship of dissociation to suicide attempts is due to “third variables” associated with both phenomena, such as symptoms of borderline personality disorder or posttraumatic stress disorder.     

The role of emotion reactivity and gender in the relationship between psychopathology and self-injurious behavior

The goal of the present study was to examine emotion reactivity, a broad construct that consists of an individual’s sensitivity, intensity, and persistence of emotional reactions, as a mediator of the relationship between two types of psychopathology (depression symptoms and borderline personality disorder (BPD) symptoms) and history of self-injurious behavior (non-suicidal self-injury (NSSI) and suicide attempts (SA)). We also examined gender as a potential moderator of this relationship. Participants (N = 1914) completed measures of emotion reactivity, psychopathology, and self-injurious behavior. Results using a series of mediated path analyses indicated that emotion reactivity mediated the relationship between (1) depressive symptoms and NSSI in females only, (2) depressive symptoms and SA in females only, and (3) probable BPD diagnosis and NSSI in both genders. Emotion reactivity did not mediate the relationship between probable BPD diagnosis and SA in either gender. Our findings suggest that emotion reactivity is a possible pathway through which depression and self-injurious behavior relate, especially in women. We temper these findings, however, within the context of relatively modest observed effects.     

教师倦怠与自尊、心理健康和离职意向的关系

为探讨教师倦怠与自尊、心理健康和离职意向之间的关系,利用工作倦怠问卷、自尊问卷、一般健康问卷和离职意向问卷对350名教师进行施测。结果表明:(1)耗竭对自尊、心理健康和离职意向有显著的预测作用(p<0.01),人格解体对自尊有显著的预测作用(p<0.01),成就感降低对自尊和心理健康有显著的预测作用(p<0.01);(2)自尊部分中介耗竭和成就感降低对心理健康的影响(p<0.01),并能完全中介人格解体对心理健康的影响(p<0.01)。     

Designing volunteers’ tasks to maximize motivation,satisfaction and performance: The impact of job characteristics on volunteer engagement

We conducted a field study to test the applicability of the job characteristics model (JCM) in volunteer organizations and examine the impact of job characteristics on volunteer motivation, satisfaction and intent to quit, as well as test a measure of volunteer performance. One hundred and twenty-four volunteers completed measures of job characteristics, motivation, satisfaction, and intent to quit. Supervisors rated volunteer task performance and organizational citizenship behaviors (OCB). Results showed that job characteristics were related to volunteers’ autonomous motivation, satisfaction and performance. Autonomous motivation acted as a mediator in the relationship between job characteristics and satisfaction. The theoretical and practical implications of these findings are discussed.

"开颅戒毒"的伦理困境

卫生部叫停"开颅戒毒"手术后,最紧要的工作应是:切实做好对人们健康权的保护工作,改变医患之间信息极不对称的现状,改善医学伦理委员会人员结构,依法规范专家资质,制定统一审查程序,明确审查行为的法律责任,以保障医疗工作更加安全.