Auditory hallucinations in acute stroke

Auditory hallucinations are uncommon phenomena which can be directly caused by acute stroke, mostly described after lesions of the brain stem, very rarely reported after cortical strokes. The purpose of this study is to determine the frequency of this phenomenon. In a cross sectional study, 641 stroke patients were followed in the period between 1996-2000. Each patient underwent comprehensive investigation and follow-up. Four patients were found to have post cortical stroke auditory hallucinations. All of them occurred after an ischemic lesion of the right temporal lobe. After no more than four months, all patients were symptom-free and without therapy. The fact the auditory hallucinations may be of cortical origin must be taken into consideration in the treatment of stroke patients. The phenomenon may be completely reversible after a couple of months.     

The role of different levels of leadership in predicting self- and collective efficacy: evidence for discontinuity

This study identified potential discontinuities in the antecedents of efficacy beliefs across levels of analysis, with a particular focus on the role of leadership climate at different organizational levels. Random coefficient modeling analyses conducted on data collected from 2,585 soldiers in 86 combat units confirmed that soldiers' experience, role clarity, and psychological strain predicted self-efficacy to a greater extent than did leadership climate. Also, leadership climate at a higher organizational level related to self-efficacy through role clarity, whereas leadership climate at a lower organizational level related to self-efficacy through psychological strain. Group-level analyses identified leadership climate at a higher organizational level as the strongest predictor of collective efficacy. Theoretical and practical implications and directions for future research are discussed.     

Self‐Protective Altruism

Prosocial behavior accentuates the tension between two conflicting human motivations, self‐interest and belongingness. Responding to the needs of others may compromise self‐interest. Acting callously, however, may lead to social disproval. These antagonistic responses are existentially meaningful as belongingness and self‐esteem have been found to regulate death anxiety. In this paper I critically examine three possible hypotheses concerning the tension between egotism and prosociality from a terror management perspective. The first hypothesis, the carpe diem hypothesis, suggests that when death is salient egotistic self‐interest overrides other‐oriented responses. The second hypothesis, the norm salience hypothesis, suggests that when death is salient people will respond according to the momentarily accessible social norm. The third hypothesis, the self‐protective altruism hypothesis, argues that when the prosocial cause reminds people of their fragile, mortal nature people will turn away from helping when death is salient, but when the prosocial cause is benign death salience will increase prosocial responding.     

Supervisors' upward exchange relationships and subordinate outcomes: testing the multilevel mediation role of empowerment

This study empirically examined the proposition that supervisors' exchange relationships with their own supervisors (i.e., leader-leader exchange, or LLX) are related to their subordinates' work-related outcomes through 3 mechanisms: (a) leaders modeling their LLX to develop and maintain their exchange relationships with their subordinates (i.e., leader-member exchange, or LMX), (b) motivating the team and its members, captured by team and individual empowerment, and (c) facilitating the relationships between LMX and individual outcomes. Analyses of multisource and lagged data from 104 team supervisors and 577 subordinates showed that LMX mediated the positive relationship of LLX on subordinates' individual empowerment. Furthermore, team empowerment and individual empowerment sequentially mediated the positive relationships between LLX and subordinates' job satisfaction and job performance. The authors also found that the indirect relationships of LMX with job satisfaction and job performance via individual empowerment were stronger when LLX was higher. Theoretical and practical implications of these findings are discussed.     

Child/Adolescent Abuse and Suicidal Behavior: Are They Sex Related?

The association between childhood and adolescent abuse and suicidal behavior, and the possible contribution of abuse to sex differences in non lethal suicidal behavior, was investigated. Data were extracted from the Israel‐based component of the WHO World Mental Health Survey (Kessler & Utsun, 2008a). Increased risk for ideation, plan, and suicidal attempt were associated with childhood abuse, and increased risk for attempt was associated also with abuse at adolescence. No associations with sex or sex by abuse interactions were observed. The higher frequency of childhood abuse among women could account in part for their higher rates of suicidal attempts as compared to men.