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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.
Gerloff et al. (Sun,) studied this question.
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