Stress and work performance: The role of trait anxiety

Employees high in Trait Anxiety (TA) were found to exert greater work effort than those low in TA, which resulted in better sales performance. There was no relation between TA and work efficiency, measured by sales performance relative to work effort. Employees high in TA also reported greater levels of stress and more adverse effects of work on non-work relationships. Using multiple regression, both stress and interference with relationships were found to be better predicted by TA than work effort. The results are discussed in terms of laboratory-based theories about relations between TA and efficiency and intervention strategies for managing stress at work.     

Demonstration and interpretation of ‘scutoid’ cells formed in a quasi-2D soap froth

ABSTRACT

Recently a novel type of epithelial cell has been discovered and dubbed the ‘scutoid’. It is induced by curvature of the bounding surfaces. We show by simulations and experiments that such cells are to be found in a dry foam subjected to this boundary condition.     

Rehabilitating civilian victims of war through psychosocial intervention in Sierra Leone

This research assessed an intervention (involving drug therapy and psychoeducational counseling) for war trauma in Sierra Leone. We examine the impact of the intervention on symptoms of post‐traumatic stress disorder (PTSD) and indicators of intergroup emotions and attitudes. Civilian war victims were drawn from a rehabilitation program (Intervention, N=50) or a waiting list Control group (N=50). The rehabilitation program combined general psychiatric treatment with additional life skills support. Those in the Intervention group had significantly lower PTSD symptoms and also scored lower on Intergroup Anxiety and Outgroup Blame, than those in Control. The intervention had an indirect effect on PTSD symptoms through Intergroup Anxiety. The reduction in PTSD in the intervention was greater for participants with a stronger identification with Sierra Leone.     

Running is the neurogenic and neurotrophic stimulus in environmental enrichment

Environmental enrichment (EE) increases dentate gyrus (DG) neurogenesis and brain-derived neurotrophic factor (BDNF) levels. However, running is considered an element of EE. To dissociate effects of physical activity and enrichment on hippocampal neurogenesis and BDNF levels, young female C57Bl/6 mice were housed under control, running, enrichment, or enrichment plus running conditions, and injected with bromodeoxyuridine. Cell genesis was assessed after 12 d and differentiation was analyzed 1 mo later. In addition, locomotor activity in the open field and hippocampal mature BDNF peptide levels were measured. Open-field adaptation was improved in all groups, compared to controls, but more so with running. New cell proliferation, survival, neuron number, and neurotrophin levels were enhanced only when running was accessible. We conclude that exercise is the critical factor mediating increased BDNF levels and adult hippocampal neurogenesis.