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.     

A Dual Process Account of Coarticulation in Motor Skill Acquisition

Many tasks, such as typing a password, are decomposed into a sequence of subtasks that can be accomplished in many ways. Behavior that accomplishes subtasks in ways that are influenced by the overall task is often described as “skilled” and exhibits coarticulation. Many accounts of coarticulation use search methods that are informed by representations of objectives that define skilled. While they aid in describing the strategies the nervous system may follow, they are computationally complex and may be difficult to attribute to brain structures. Here, the authors present a biologically- inspired account whereby skilled behavior is developed through 2 simple processes: (a) a corrective process that ensures that each subtask is accomplished, but does not do so skillfully and (b) a reinforcement learning process that finds better movements using trial and error search that is not informed by representations of any objectives. We implement our account as a computational model controlling a simulated two-armed kinematic “robot” that must hit a sequence of goals with its hands. Behavior displays coarticulation in terms of which hand was chosen, how the corresponding arm was used, and how the other arm was used, suggesting that the account can participate in the development of skilled behavior.     

Combined Effects of Positive and Negative Affectivity and Job Satisfaction on Job Performance and Turnover Intentions

Capturing data from employee–supervisor dyads (N = 321) from eight organizations in Pakistan, including human service organizations, an electronics assembly plant, a packaging material manufacturing company, and a small food processing plant, we used moderated regression analysis to examine whether the relationships between trait affect (positive affectivity [PA] and negative affectivity [NA]) and two key work outcome variables (job performance and turnover) are contingent upon the level of job satisfaction. We applied the Trait Activation Theory to explain the moderating effect of job satisfaction on the relationship between affect and performance and between affect and turnover. Overall, the data supported our hypotheses. Positive and negative affectivity influenced performance and the intention to quit, and job satisfaction moderated these relationships. We discuss in detail the results of these findings and their implications for research and practice.     

The effect of limited attention and delay on negative arousing false memories

ABSTRACT

Previous research has shown that, in comparison to neutral stimuli, false memories for high arousing negative stimuli are greater after very fast presentation and limited attention at study. However, full compared to limited attention conditions still produce comparably more false memories for all stimuli types. Research has also shown that emotional stimuli benefit from a period of consolidation. What effect would such consolidation have on false memory formation even when attention is limited at study? The aim of the present study was to investigate the effect of fast presentation on false memory production for negatively-arousing and neutral items over time using the DRM paradigm. Sixty-eight participants studied Negative and neutral DRM lists with fast or slow presentation conditions. Half completed a recognition test immediately and half completed a recognition test after one-week. Results revealed that, for fast presentation, negative critical lures increased after one week and were comparable to negative critical lures in the slow presentation encoding conditions. Neutral critical lures in the fast presentation condition did not change and remained lower compared to the slow presentation condition. These findings are the first demonstration that arousing negative false memories can increase over time when attention at encoding is limited.     

ESAP Students’ Comprehension of Multiple Technical Reading Texts: Insights from Personal Epistemological Beliefs

Given the importance associated with multiple-document literacy in the present-day knowledge societies and the dearth of research in English Language Teaching in general and English for Specific/Academic Purposes (ESAP) contexts in particular on multiple-document comprehension and the significance of reader beliefs in this type of comprehension, the present study was carried out with the aim of investigating the relationship between ESAP students’ personal epistemological beliefs and their inferential intratextual and intertextual understanding of multiple texts. To this aim, 64 first-semester midwifery students were selected as the participants of the study. They were required to read four passages on multi-fetal pregnancy which discussed different aspects of this phenomenon. Having filled out the Epistemological Beliefs Inventory, they were tested on the inferential intratextual and intertextual comprehension of the texts. Results of the analyses of the data revealed significant associations between epistemological beliefs and the inferential comprehension of multiple texts. The results also indicated the poorer performance of the participants in intertextual inferential understanding of the texts compared with the intratextual understanding of them. The study concludes with tentative implication of the findings for ESAP reading courses.     

The Moderating Effect of Machiavellianism on the Psychological Contract Breach–Organizational Identification/Disidentification Relationships

Purpose

We explore whether Machiavellianism—a personality trait which describes the extent to which individuals ignore values and ethical considerations when the ends justify the means—will influence their responses to their employing organizations’ failure to fulfil promised obligations (psychological contracts). Specifically, we draw on psychological contracts theory and the group value model to argue that Machiavellianism will moderate the relationships between psychological contract breach and (1) organizational identification; and (2) organizational disidentification.

Design/Methodology/Approach

We tested our hypotheses in a study of 262 employees from various organizations at two points in time.

Findings

We found that psychological contract breach was negatively related to organizational identification and positively related to organizational disidentification. Furthermore, employees with higher levels of Machiavellianism tended to disidentify with their organizations to a greater extent (at Time 2) in response to psychological contract breach (at Time 1) than did employees with low levels of Machiavellianism. Machiavellianism did not moderate the relationship between psychological contract breach and organizational identification.

Implications

Our study contributes to extant research exploring the importance of Machiavellianism in the workplace. Specifically, we show that employees with high levels of Machiavellianism are more likely to disidentify in response to psychological contract breach but do not tend to identify to a lesser degree.

Originality/Value

This study builds on the extant research exploring individual differences in the psychological contract dynamics by considering Machiavellianism as a moderator of the breach–outcome relationship.     

Social Capital, Employment and Occupational Status of the New Immigrants in Canada

Using the Longitudinal Survey of Immigrants in Canada (LSIC), this study examines the role of social capital in the labour market integration of new immigrants in Canada, utilizing various measures of social capital and treating employment and occupational Socio-Economic Scale (SES) as the indicators of labour market integration. The findings show that visible minority immigrants have significantly lower levels of employment and SES compared to white immigrants. Furthermore, social capital contributes significantly to an increased likelihood of employment and also to higher SES positions. However, the effect of social capital varies by the types of social capital, ethno-racial origins, as well as forms of economic integration.     

The precuneus and the insula in self-attributional processes

Attributions are constantly assigned in everyday life. A well-known phenomenon is the self-serving bias: that is, people’s tendency to attribute positive events to internal causes (themselves) and negative events to external causes (other persons/circumstances). Here, we investigated the neural correlates of the cognitive processes implicated in self-serving attributions using social situations that differed in their emotional saliences. We administered an attributional bias task during fMRI scanning in a large sample of healthy subjects (n = 71). Eighty sentences describing positive or negative social situations were presented, and subjects decided via buttonpress whether the situation had been caused by themselves or by the other person involved. Comparing positive with negative sentences revealed activations of the bilateral posterior cingulate cortex (PCC). Self-attribution correlated with activation of the posterior portion of the precuneus. However, self-attributed positive versus negative sentences showed activation of the anterior portion of the precuneus, and self-attributed negative versus positive sentences demonstrated activation of the bilateral insular cortex. All significant activations were reported with a statistical threshold of p ≤ .001, uncorrected. In addition, a comparison of our fMRI task with data from the Internal, Personal and Situational Attributions Questionnaire, Revised German Version, demonstrated convergent validity. Our findings suggest that the precuneus and the PCC are involved in the evaluation of social events with particular regional specificities: The PCC is activated during emotional evaluation, the posterior precuneus during attributional evaluation, and the anterior precuneus during self-serving processes. Furthermore, we assume that insula activation is a correlate of awareness of personal agency in negative situations.     

Cognitive and Non-Cognitive Factors Contributing to the Longitudinal Identification of Successful Older Adults in the Betula Study

ABSTRACT

Studies of successful aging have typically defined elderly who fall in the upper end of a distribution of test scores as successful. A different definition of successful aging requires that older adults fall at or above the mean level of younger adults and maintain this level over time. Here we examined this definition of successful aging in a sample of 1463 individuals between the ages of 50 of 85. Based on principal coordinate analysis of cognitive and non-cognitive variables, we identified a group of 55 (8.3%) 70–85 years olds that were high functioning. This group of elderly showed elevated performance on a range of cognitive tasks. Non-cognitive factors that characterized this group included education and subjective health. The participants were retested 5 years later and the same type of analysis was repeated. Of the remaining individuals who initially were classified as high functioning, 18 (35%) remained high functioning and thus met the definition for successful aging. Years of education was a significant predictor of who remained successful over time.     

Temporal Contiguity and Contingency Judgments: A Pavlovian Analogue

The two experiments reported examine the role of temporal contiguity on judgments of contingency in a human analogue of the Pavlovian task. The data show that the effect of the actual delay on contingency judgment depends on the observer's expectation regarding the delay. For a fixed contingency between the cue and the outcome, ratings of the contingency are higher when the actual delay is congruent with the observer's expectation than when it is incongruent. We argue that our data can be understood within the context of the temporal coding hypothesis.