Group Leaders as Gatekeepers: Testing Safety Climate Variations across Levels of Analysis

This paper tests the moderating effect of transformational supervisory leadership on the relationship between organisational and group climates, using safety climate in risky operations as an exemplar. Results indicated that under low or poor organisational climate, indicative of limited organisational commitment to employee safety, transformational leaders promoted a higher group climate as compared to the organisational climate. Similarly, under a weak organisational climate, indicative of limited consensus among company employees regarding the priority of safety, transformational leaders promoted a stronger group climate, reflecting greater consensus among group members. This pattern suggests that supervisory leaders can act as gatekeepers, with transformational leaders offering better protection against potentially harmful organisation‐level priorities. Furthermore, transformational supervisors better informed their members of the organisational priorities as they perceived them, resulting in a stronger relationship between individual supervisors' perceptions and members' organisational climate perceptions. Implications for climate and leadership research are discussed. On s'intéresse dans cet article à l'impact régulateur du leadership hiérarchique de transformation sur la relation entre les climats organisationnels et de groupe en utilisant comme exemple la sécurité dans les opérations à risque. Les résultats montrent qu'en cas de climat organisationnel médiocre signifiant une implication organisationnelle minimale à propos de la sécurité du personnel, les leaders de transformation favorisent l'émergence d'un climat de groupe plus satisfaisant que le climat organisationnel. De même, si le climat organisationnel est fragile, traduisant un accord approximatif des salariés sur la prioritéà accorder à la sécurité, les leaders de transformation sont à l'origine d'un climat de groupe renforcé, expression d'un meilleur consensus parmi les membres du groupe. Ce schéma laisse penser que les leaders hiérarchiques peuvent intervenir comme gardiens, les leaders de transformation offrant une meilleure protection contre les priorités organisationnelles potentiellement nocives. De plus, les managers de transformation informent mieux leur équipe des priorités organisationnelles telles qu'ils les perçoivent, ce qui provoque une relation plus étroite entre les perceptions personnelles du manager et celles que son groupe a du climat organisationnel. On réfléchit aux retombées de ce travail sur les recherches portant sur le climat et le leadership.     

Accommodation and stereoacuity

Stereoacuity and resolution acuity were measured (1)through apertures set at various distances from O and (2) through plus lenses producing an accommodative error for the target equal to that produced by the presence of the apertures. Stereoacuity was degraded by the apertures but not by the lenses, whereas resolution acuity was degraded by the lenses but not by the apertures. Although stereoacuity progressively declined with decreasing target distance, it did not change significantly if accommodation remained constant. The decline of stereoacmty in the water ts attributed to increased accommodation resulting from different sources and to a “Ganzfeld” effect of the typical underwater scene.     

Peripheral stimuli and stereoacuity under water

A variety of attempts were made to improve stereoacuity under water by providing limited additional peripheral stimulation. It was concluded that acuity is most improved when the peripheral stimuli are at the same distance from the o as the target. As the peripheral stimuli are moved closer to the 0 than the target, their beneficial effects are decreased, and beyond a certain point, their presence degrades acuity. This effect seems to be enhanced by increasing turbidity of the water, which decreases the contrast of the distant target relative to that of the nearby peripheral stimuli. These and previous findinp implicate several distinct processes in the degradation of stereoacuity in the water.     

Religious Attendance and Volunteering: Testing National Culture as a Boundary Condition

Numerous studies have documented the importance of religion, and especially of religious congregational attendance, in regard to volunteering. Most of these studies focus on individual and contextual factors, usually within one country. Recent studies suggest that the association between religious attendance and volunteering varies among countries. We hypothesize that national culture plays an important role in explaining volunteering mainly as a moderator of the relationship between religious attendance and volunteering, especially on volunteering to help people in need. To support this position, we used individual‐level data from the World Values Survey (WVS) coupled with national data on cultural measures. This enabled assessment of these relationships using a multilevel analysis of individuals nested in countries. We used two models of national culture, Hofstede (1984) and WVS to explain the differences between countries. We found direct relationships between national culture constructs (power distance and survival/self‐expression values) and volunteering. We also found that individualism, power distance, and survival/self‐expression values moderated the effect of religion on volunteering, with a stronger relationship between religious attendance and volunteering in nationalities with self‐expression values, high power distance, and low individualism. Theoretical and practical implications of this approach are discussed.     

Increased control demand results in serial processing: evidence from dual-task performance

Increased demands on cognitive control trigger changes in processing mode. One such modulation involves a shift from parallel to serial processing. This study assessed the role of control demand in determining whether dual-task processing is performed serially or in parallel. We used two critical indices, based on the response-selection bottleneck model, to show that response selection was serial when a task switch was involved, but partly parallel when the simultaneous performance of the tasks did not involve task switching.     

Books

Abstract

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