Are Ethics Training Programs Improving? A Meta-Analytic Review of Past and Present Ethics Instruction in the Sciences

Given the growing public concern and attention placed on cases of research misconduct, government agencies and research institutions have increased their efforts to develop and improve ethics education programs for scientists. The present study sought to assess the impact of these increased efforts by sampling empirical studies published since the year 2000. Studies published prior to 2000 examined in other meta-analytic work were also included to provide a baseline for assessing gains in ethics training effectiveness over time. In total, this quantitative review consisted of 66 empirical studies, 106 ethics courses, 150 effect sizes, and 10,069 training participants. Overall, the findings indicated that ethics instruction resulted in sizable benefits to participants and has improved considerably within the last decade. A number of specific findings also emerged regarding moderators of instructional effectiveness. Recommendations are discussed for improving the development, delivery, and evaluation of ethics instruction in the sciences.     

Self-reported emotional and behavioral problems in Swedish 14 to 15-year-old adolescents: a study with the self-report version of the Strengths and Difficulties Questionnaire

The psychometric properties of the Swedish self-report version of the Strengths and Difficulties Questionnaire (SDQ-s), and the prevalence of emotional and behavioral problems as measured by the SDQ-s, were studied in 14 to 15-year-old adolescents. The psychometric properties were found to be similar to those found in other language versions, in terms of similar factor structure and acceptable test-retest stability, but low internal consistencies for some of the subscales. There was evidence of good convergent and discriminant validity. The results with regard to gender differences replicated previous findings in other countries, the girls reporting more emotional symptoms and more prosocial behavior, and the boys reporting more conduct problems and tending to report more peer problems. It is concluded that the results are in favor of using the Swedish SDQ-s as a screening instrument for adolescents, despite the low internal consistencies of some of its subscales.     

Age Differences in Perceived Positive Affect, Negative Affect, and Affect Balance in Middle and Old Age

Meta-analysis was used to synthesize findings from 125 studies on age differences in positive affect, negative affect, and affect balance. We found a small age-associated decline of positive affect and affect balance, and a small age-associated increase of negative affect. In addition, a quadratic age trend emerged, showing stronger declines of positive affect and stronger increases of negative affect in older subjects. Looking at changes of specific emotions, we found an age-associated decline of those positive and negative feelings that are associated with high arousal (e.g., feeling excited or upset), and an age-associated increase of positive and negative low-arousal emotions (e.g., feeling relaxed or depressed). Furthermore, older adults from the former communist Eastern European countries showed the strongest age-associated decline of positive affect and the strongest age-associated increase of negative affect. We conclude that age-associated losses in the oldest old and economic hardship make the optimization of subjective well-being increasingly difficult.     

感知社会支持与学生学业成就关系的元分析：学习投入的中介作用

学业成就是衡量学生学习认知能力和检测其学习效果的重要指标,受到感知社会支持和学习投入等因素的显著影响,先前的研究已经考察了这两个因素对学业成就的共同作用机制,但感知社会支持与学业成就的关系强度不明,且尚不完全清楚中介效应、调节效应对二者关系的影响。因此当前研究采用元分析方法检验效应量的可靠性、学习投入的中介效应以及一系列调节效应。研究共纳入符合要求的原始文献41篇,含78个研究。结果发现：(1)感知社会支持及子类型与学业成就呈现显著的正相关,但效应值偏小,即二者之间存在的是弱相关。此外,感知社会支持及子类型显著正向预测学习投入,且对学习投入的效应量高于对学业成就的效应量。(2)学段仅对感知教师支持的调节效应显著,学业成就指标调节了感知社会支持及子类型与学业成就之间的关系,而经济水平和文化背景的调节效应不显著。(3)学习投入在感知社会支持及子类型对学业成就的影响中起到部分中介作用,且中介效应只存在于初中群体,在高中群体中介效应不显著。     

Time trends in the effects of mindfulness-based cognitive therapy for depression: A meta-analysis

Recent studies suggest that the effects of cognitive therapies for depression show systematic changes over time. A meta-analysis was conducted to explore the temporal development of the effect of mindfulness-based cognitive therapy (MBCT) for current depression in studies that used the Beck Depression Inventory (BDI) or the Hamilton Depression Rating Scale (HDRS) as outcome measures. A systematic search of research databases yielded 20 studies that were included in the analyses. The results showed that MBCT is effective in reducing depressive symptoms. The effect sizes of studies using the BDI or the HDRS as an outcome measure were not moderated by the time of publication. Funnel plots and the trim and fill method suggested that publication bias was low. However, the number of available studies was small, and the time period investigated relatively short. The results should therefore be considered preliminary.     

Does lack of control lead to conspiracy beliefs? A meta-analysis

Perceived lack of control is widely believed to motivate, at least partly, belief in conspiracy theories. We question the theoretical foundations of this belief and meta-analyze existing published and unpublished studies to assess the overall effect of lack of control on conspiracy beliefs. The overall effect was small and not statistically significant (d = −0.05), and was not moderated by comparison group (baseline vs. control affirmation), type of manipulation used to threaten control, inclusion of a manipulation check, or sample type. However, the predicted effect of control was more likely to be observed when beliefs were measured in terms of specific conspiracy theories, rather than as general or abstract claims. Overall, the present studies to date offer limited support for the hypothesis that conspiracy beliefs arise as a compensatory control.     

Evaluation of publication bias in response interruption and redirection: A meta-analysis

Publication bias is the disproportionate representation of studies with large effects and statistically significant findings in the published research literature. If publication bias occurs in single-case research design studies on applied behavior-analytic (ABA) interventions, it can result in inflated estimates of ABA intervention effects. We conducted an empirical evaluation of publication bias on an evidence-based ABA intervention for children diagnosed with autism spectrum disorder, response interruption and redirection (RIRD). We determined effect size estimates for published and unpublished studies using 3 metrics, percentage of nonoverlapping data (PND), Hedges' g, and log response ratios (LRR). Omnibus effect size estimates across all 3 metrics were positive, supporting that RIRD is an effective treatment for reducing problem behavior maintained by nonsocial consequences. We observed larger PND for published compared to unpublished studies, small and nonsignificant differences in LRR for published compared to unpublished studies, and significant differences in Hedges' g for published compared to unpublished studies, with published studies showing slightly larger effect. We found little, if any, difference in methodological quality between published and unpublished studies. While RIRD appears to be an effective intervention for challenging behavior maintained by nonsocial consequences, our results reflect some degree of publication bias present in the RIRD research literature.     

A primer for using multilevel models to meta-analyze single case design data with AB phases

Meta-analytic methods provide a way to synthesize data across treatment evaluation studies. However, these well-accepted methods are infrequent with behavior analytic studies. Multilevel models may be a promising method to meta-analyze single-case data. This technical article provides a primer for how to conduct a multilevel model with single-case designs with AB phases using data from the differential-reinforcement-of-low-rate behavior literature. We provide details, recommendations, and considerations for searching for appropriate studies, organizing the data, and conducting the analyses. All data sets are available to allow the reader to follow along with this primer. The purpose of this technical article is to minimally equip behavior analysts to complete a meta-analysis that will summarize a current state of affairs as it relates to the science of behavior analysis and its practice. Moreover, we aim to demonstrate the value of analyses of this sort for behavior analysis.     

表层表演和深层表演的关系:来自元分析的证据

采用元分析的方法探讨两种主要情绪劳动策略(表层表演、深层表演)之间的相关.经筛选,共有150篇文献的162个独立样本(N = 63629)符合标准.元分析结果发现,表层表演与深层表演呈显著正相关(r = 0.17).量表的作答方式、测量工具、职业类型对表层表演与深层表演的相关具有显著影响.具体表现为,量表的作答方式为频...     

The relationship between self-harm and alexithymia: A systematic review and meta-analysis

Self-harm, defined for the purpose of this review as any act of self-injury without explicit suicidal intent, is an increasing public health concern, with potential long-term implications for those who engage in it. Previous research has identified a correlational relationship between self-harm and alexithymia, an emotion processing deficit characterized by difficulties identifying and describing feelings, and an externally orientated thinking style. Through a systematic search of the literature, the current review examines the association between alexithymia and self-harm. A meta-analysis based on 23 studies found a significant, positive relationship between self-harm and alexithymia, with a medium effect size (g = 0.57, 95% CI 0.46–0.69). All 23 studies used the Toronto Alexithymia Scale (TAS20) to measure alexithymia. The alexithymia subcomponents difficulty identifying feelings and difficulty describing feelings were significantly associated with self-harm, but there was no significant association between self-harm and externally orientated thinking. The effect size of the relationship was significantly larger in adolescent samples compared with adult samples and in female compared with male samples. The definition of self-harm did not affect the effect size of the relationship between alexithymia and self-harm and the results are consistent with previous meta-analyses focused more narrowly on non-suicidal self-injury and, separately, suicidal behaviors. Heterogeneity between the included studies was high. The results support an affect regulation model of self-harm, in which self-harm is used to regulate an emotional experience that is poorly understood.