Group & Organization Management current issue

Leader--Member Exchange as a Moderator of the Relationship Between Work Group Diversity and Team Performance

Stewart, M. M., Johnson, O. E. — Fri, 09 Oct 2009 15:58:58 PDT

This study tests a moderator of the association between diversity and work group performance: leader—member exchange (LMX). The authors theorized performance effects associated with the differentiation and aggregate level of the dyadic LMX relationships in work groups and that the nature of these LMX effects would vary qualitatively as a function of work group diversity. The model was tested with a U.S. military operational simulation, including 224 high-ranking officers in 65 temporary work groups. Results indicate that LMX interacted with work group gender diversity, such that in more gender diverse groups LMX differentiation was positively associated with work group performance when aggregate LMX was high (above the median); among less gender diverse groups, LMX differentiation was not associated with performance when aggregate LMX was high, consistent with prior research. No effects of gender diversity were found among work groups reporting low aggregate LMX or with regard to group member functional background diversity.

Valuing Skill Differences: Perceived Skill Complementarity and Dyadic Helping Behavior in Teams

Oosterhof, A., Van der Vegt, G. S., Van de Vliert, E., Sanders, K. — Fri, 09 Oct 2009 15:58:58 PDT

This article reports effects of perceived skill dissimilarity and perceived skill complementarity on dyadic helping behavior using a cross-lagged panel study. Specifically, the authors hypothesize that perceived skill dissimilarity is negatively related, whereas perceived skill complementarity is positively related, to self-rated and peer-rated dyadic helping behavior in teams. The authors compare the effects of both perceptions in a sample of 301 unilateral work relationships within 20 student research teams. The study shows that perceived skill dissimilarity is unrelated to self-rated and peer-rated dyadic helping behavior whereas perceived skill complementarity is positively related to both self-rated and peer-rated dyadic helping behavior.

Individual Task Choice and the Division of Challenging Tasks Between Men and Women

Fri, 09 Oct 2009 15:58:58 PDT

Challenging experiences are considered important for career development, and previous studies have suggested that women have fewer o f those experiences in their jobs than men have. However, the nature and possible determinants of this gender gap in job challenge have hardly been empirically studied. In the present study, the authors examine (a) gender differences in individuals’ choice to perform challenging tasks and (b) gender differences in the allocation of challenging tasks in opposite-sex dyads. Results show that the men and women in the sample did not differ in their individual choice to perform challenging tasks, but after task allocation in opposite-sex dyads men ended up with more of the challenging tasks, whereas women ended up with more of the nonchallenging tasks. The authors discuss the possible consequences of these results for women’s career development.

Moderating Role of Follower Characteristics With Transformational Leadership and Follower Work Engagement

Zhu, W., Avolio, B. J., Walumbwa, F. O. — Fri, 09 Oct 2009 15:58:58 PDT

This study examines whether follower characteristics moderate the relationship between transformational leadership and follower work engagement. Data were collected from 140 followers and their 48 supervisors from a diverse range of industries in South Africa. Hierarchical linear modeling results show that follower characteristics moderate the positive relationship between transformational leadership and follower work engagement. More specifically, transformational leadership has a more positive effect on follower work engagement when follower characteristics are more positive. Implications of the findings for theory, research, and practice are discussed.