Efficacy of Guided iCBT for Depression and Mediation of Change by Cognitive Skill Acquisition

Guided internet CBT (iCBT) is a promising treatment for depression; however, it is less well known through what mechanisms iCBT works. Two possible mediators of change are the acquisition of cognitive skills and increases in behavioral activation. We report results of an 8-week waitlist controlled trial of guided iCBT, and test whether early change in cognitive skills or behavioral activation mediated subsequent change in depression. The sample was 89 individuals randomized to guided iCBT (n = 59) or waitlist (n = 30). Participants were 75% female, 72% Caucasian, and 33 years old on average. The PHQ9 was the primary outcome measure. Mediators were the Competencies of Cognitive Therapy Scale–Self Report and the Behavioral Activation Scale for Depression–Short Form. Treatment was Beating the Blues plus manualized coaching. Outcomes were analyzed using linear mixed models, and mediation with a bootstrap resampling approach. The iCBT group was superior to waitlist, with large effect sizes at posttreatment (Hedges’ g = 1.45). Dropout of iCBT was 29% versus 10% for waitlist. In the mediation analyses, the acquisition of cognitive skills mediated subsequent depression change (indirect effect = -.61, 95% bootstrapped biased corrected CI: -1.47, -0.09), but increases in behavioral activation did not. iCBT is an effective treatment for depression, but dropout rates remain high. Change in iCBT appears to be mediated by improvements in the use of cognitive skills, such as critically evaluating and restructuring negative thoughts.     

Differences in the Valuing of Power Among Team Members: a Contingency Approach Toward Examining the Effects of Power Values Diversity and Relationship Conflict

Purpose

The purpose of this study was to investigate the conditional effects of power values diversity and relationship conflict.

Design/Methodology/Approach

We utilized a time-lagged survey design and multilevel modeling to investigate 60 teams working on a project task over the course of 4 months.

Findings

When participative safety climate was high, the presence of high power values diversity was particularly helpful for reducing relationship conflict. In turn, decreased relationship conflict tended to increase team performance. Additionally, when workload sharing was low, high relationship conflict was especially harmful to team performance.

Implications

Results support the consideration of team participative safety climate to better understand the conditions under which power values diversity is likely to lessen relationship conflict and subsequently increase team performance. Findings also highlight the importance of avoiding low workload sharing, in the presence of prominent relationship conflict, to increase team performance.

Originality/Value

By examining relationship conflict as a mediator and participative safety climate as a moderator of power values diversity’s effects, we make a novel contribution to extant literature by helping to elucidate both how and under what conditions differences in power values, among team members, can influence team performance. Relatedly, we answer the call for more research that adopts a contingency approach toward examining the effects of values diversity and relationship conflict. In doing so, we help to identify the conditions under which power values diversity and relationship conflict are likely to differentially influence important team outcomes.

     

The Conceptualisation and Measurement of Pacing Styles

Pacing style reflects how individuals distribute their effort over time in working toward deadlines. As a new construct introduced in 2002, the notion of pacing style has intuitive appeal, but has been under‐researched, in part, due to a measurement need. Therefore, the purpose of this research was to improve the conceptualisation of pacing style and to develop and validate a new scale‐based measure. The result was the nine‐item Pacing Action Categories of Effort Distribution (PACED), consisting of deadline (complete work in a short time period just before the due date), steady (spread task activities evenly over time), and U‐shaped (invest most of the effort at the start and finish of a task, with a break in between) action styles. Across eight independent samples of students, faculty, and organisational employees, we examined the dimensionality, internal consistency, stability (temporal and situational), and validity (construct, convergent, discriminant, predictive) of PACED. Results support the use of PACED as a reliable and valid measure, and we discuss several research avenues that would benefit from incorporating the concept of pacing style.     

Towards a better understanding of the relationship between executive control and theory of mind: an intra‐cultural comparison of three diverse samples

Previous research has consistently indicated that theory of mind (ToM) is associated with executive control in the preschool years. However, interpretation of this literature is limited by the fact that most studies have focused exclusively on urbanized Western cultural samples. Consequently, it is not clear whether the association between ToM and executive control reflects the specific features of this particular cohort or instead reflects a universal pattern. The present study provides the first empirical assessment of these two constructs in three diverse groups of Iranian children. Participants were 142 preschoolers (4–5 years old) from high–socioeconomic status (SES) urban (n = 33), low–SES urban (n = 37) and rural villages (n = 77). The results show that there is a robust association between ToM and executive control in all three groups, and that executive control contributes significant unique variance to ToM understanding, even after controlling for a range of variables that have been proposed as potential confounders of this relationship. However, although the three groups were equated in ToM, significant differences in executive control were evident. Moreover, cluster analysis identified three distinct clusters that were relatively homogeneous with respect to executive control and SES. One of these clusters was characterized by both low SES and low executive functioning, and showed little evidence of ToM understanding. Taken together, these findings provide possibly the clearest evidence to date that the association between ToM and executive control is not dependent on children's previous experiences on the tasks, or their family and cultural background. A video abstract of this article can be viewed at https://www.youtube.com/watch?v=dxh_-3gCB8o     

Religion,Cultural Clash,and Muslim American Attitudes About Politically Motivated Violence

Does adherence to Islam predict attitudes about “suicide bombing” among American Muslims? This study examines the effects of religious and political factors on views of politically motivated violence (PMV). We draw from diverse scholarship, emphasizing arguments that are inspired by Samuel Huntington's Clash of Civilizations perspective, as well as recent work in the sociology of Islam. Using a measure that gauges support for “suicide bombing” from the 2007 Pew Survey of American Muslims, results from logistic regression models suggest that political views and religious factors have a minimal effect on Muslim American attitudes toward suicide bombing. Furthermore, we find that Qur’ānic authoritativeness (i.e., the view that the Qur’ān is the word of God and not written by men) is associated with lower odds of supporting this form of PMV. We discuss the implications of our findings for the often anecdotal and alarmist accounts that link Muslim religiosity to support for “radical” extremism. We close with study limitations and avenues of future research.     

Post-traumatic stress disorder symptoms of children following the occurrence of Tehran City Park disaster

The authors investigated the post-traumatic stress disorder (PTSD) symptoms of young adolescents who had been directly involved in a disaster in Tehran. The participants were 19 chlidren who had survived a boat sinking in Tehran's city park in 2002. By using the Post-Traumatic Stress Disorder Symptom Scale (PSS; E. B. Foa, D. S. Riggs, C. V. Dancu, & B. O. Rothbaum, 1993) as well as a clinical interview based on the definition cited in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV; American Psychiatric Association, 1994, p. 424), 16 participants (84.2%) were diagnosed with PTSD using the PSS and 17 (89.5%) were diagnosed with PTSD using the psychiatric interview.     

Homogeneous nucleation of dislocation loops under stress in perfect crystals

We present an analysis and results on the homogeneous nucleation of a dislocation loop under stress in a perfect crystal. By using a variational boundary integral method in the Peierls-Nabarro framework, we have determined the saddle-point configurations of embryonic dislocation loops and their associated activation energies under stress levels up to the ideal shear strength. The high-energy barriers under the usual levels of applied shear stresses, differing markedly from the ideal shear strength, confirm the widely held view that thermal motion should play no role in such nucleation. The result provides means for more definitive solutions of fundamental problems involving homogeneous nucleation of dislocation loops and has significant implications for models based on the mechanism of nucleation of dislocations from a perfect crystal.     

The Impact of Leadership Style on Moral Identity and Subsequent In-Role Performance: A Moderated Mediation Analysis

This study investigated the impact of supervisors’ servant leadership (i.e., leadership that starts with a leader who wants to serve) on supervisees’ moral identity and subsequent in-role performance. Data from 226 supervisor–supervisee dyads were collected from several domestic and multinational companies operating in the Kingdom of Saudi Arabia. Confirmatory factor analysis was conducted to confirm the factorial validity of the measures that were employed in this study. The hypothesized moderated mediation model was tested using hierarchical multiple regression analysis. Based on social learning theory, the results showed that supervisees’ moral identity served as the psychological mediating mechanism through which supervisors’ servant leadership led to supervisees’ increased in-role performance. Furthermore, the results also supported supervisees’ avoidance orientation as the dispositional boundary condition of this mediating effect. This study contributes to both the servant leadership and moral identity literatures by addressing questions with useful theoretical and managerial implications.     

Religious Context and Prosociality: An Experimental Study from Valparaíso,Chile

Are people more prosocial in a religious context? We addressed this question through an experiment. We randomly placed participants in the control group in a neutral location (a lecture hall), and we placed participants in the experimental group in a religious location (a chapel). The participants then took part in a one‐shot three‐person public goods game, which measured participants’ degree of cooperativeness. The results showed that participants in the experimental group cooperated significantly more than did participants in the control group. Furthermore, participants’ beliefs about other participants’ cooperativeness were more positive in the experimental group than they were in the control group. Improved expectations of others partially explained the enhanced cooperation in the religious context. We found no main or interaction effect of self‐reported religiosity in the experiment.