A Cross-Study Analysis of Covariation Judgments.
CHICAGO UNIV IL CENTER FOR DECISION RESEARCH
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Literature on covariation judgments has suggested that such judgments are effected by task, data, and subject characteristics. However, as a general rule, research studies have been confined to only one or two situations or sets of traits. In this paper data from several studies are pooled in order to mitigate the effects of specific characteristics, and a lens model analysis is done. It is found that subject achievement is high in the covariation task as opposed to tasks used in other lens model studies. However, subjects did not use all of the available information to the extent specified in the statistical covariation model. The normativeness of this model is questioned. Author
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