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... f departmental bias in problem identification has prompted a scholarly concern about managers' informationprocessing capabilities. Through measures of inanagers' entire work histories, their belief structures, and three indexes of information processing in an ill-structured decision situation, the present research conceptually replicated and extended Dearborn and Simon's early work. Contrary to prevailing belief about managers' information-processing limitations, the managers in this investigation did not emerge as simpleminded information processors.