Duncan's 1972 instrument was completed by 118 Project Managers to investigate perceived environmental uncertainty (PEU). Factor analysis indicates significant loadings on three factors corresponding to Milliken 's (1987) state, effect, and response uncertainty. Measures of project manager performance were found to be differentially associ-ated with total PEU and its disaggregated components of state, effect, and response uncertainty.

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Pressures for early consensus during group decision processes often lead to poor choices. However, consensus as an outcome of group decision processes is often desirable for implementing choices. We propose and test hypotheses that structured decision making techniques designed to enhance the expression of cognitive conflict will, paradoxically, (1) strengthen group consensus about and individual acceptance of the group S eventual choices, and (2) increase member satisfaction with the group. Faced with a realistic managerial scenario, nineteen groups in this study deliberated using the structured, conflict-enhancing dialectical inquiry (DI) approach; nineteen used the consensus (C) approach. Group consensus on the decision, individual acceptance of the decision, and member satisfaction with the group were higher in the DI than in the C conditions. We discuss implications for group decision aids and for future laboratory and field studies of group consensus on a course of action.

This article proposes a new thesis about the role of individual differences in managers' media choice behavior. It argues that individual differences influence media choice only under conditions of low message equivocality. When equivocality is high, a “richness imperative” masks the influence of individual differences. Managers are compelled to use richer media to match the equivocality of the message. However, in low-equivocality situations, richness demands are lowered. Any medium is capable of carrying the message. Thus managers have more freedom to act on their preferences, and individual differences are more likely to influence behavior. The findings of an exploratory study provide some support for this theoretical notion. As hypothesized, the judging/perspective attitude, as measured by the Myers Briggs Type Indicator, influenced media choice under conditions of low equivocality but not under conditions of high equivocality. However, tolerance for ambiguity did not significantly influence media choice under either condition. Implications for future research and practicing managers are discussed.

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