英文摘要 |
Recent empirical findings reveal that individuals with more informal power in a group may have greater influence on group effectiveness. A network central actor (NCA) with the highest centrality measured by the extent to which that member is connected to others in their social network is an important informal leader in the group. However, the effects and mechanisms of NCA moods on group effectiveness and performance are not yet clear and warrant further research. From the mood contagion perspective and the social network model, we study work-related networks within a work group in an actual work setting and then examine:
(a) the relationship between NCA moods and group moods, and (b) the mediation of work group moods on the link between NCA moods and group effectiveness, including collective efficacy, group cohesion, and group performance. The sample includes 49 work groups involving 552 employees and 49 formal leaders collected from four organizations in different industries-a chain-restaurant, an insurance company, a department store, and a hospital. Questionnaire surveys were the major research method used in this study to collect data. The results indicate that NCA positive moods have significant effect on group moods but their negative moods
have no similar effect. In addition, work group moods significantly mediate the relationship between NCA moods and collective efficacy as well as group cohesion, but not between NCA moods and group performance. Research implications in terms of NCA moods, work groups and group effectiveness are discussed. |