The role of CEO emotional stability and team heterogeneity in shaping the top management team affective tone and firm performance relationship

In this paper, we aim to bridge the micro-macro divide by addressing continued calls from strategic leadership and affect researchers to examine the black box to consider how CEO characteristics relate to top management team (TMT) affective experiences, and, in turn firm outcomes. We further consider the role of one key contextual factor in this relationship: TMT heterogeneity. We predict that CEO personality, specifically, emotional stability, is positively associated with TMT affective tone. Moreover, we posit that the relationship between TMT affective tone and firm performance depends on TMT task-related heterogeneity, such that positive affective tone benefits firm performance in heterogeneous TMTs, whereas negative affective tone benefits firm performance in homogeneous TMTs. Using a novel methodology that measures key psychological aspects of the CEO and TMT, we examined 50 TMTs from publicly-traded companies to test our predictions. Our findings offer theoretical contributions to the strategic leadership, affect and diversity literatures as well as managerial applications for CEO selection and management and managing diversity in upper echelons.