Judging the Probability of Representative and Unrepresentative Unpackings
نویسندگان
چکیده
The hypothesis that category descriptions are interpreted narrowly, in terms of representative instances, is examined by comparing probability judgments for packed descriptions of events to judgments for coextensional unpacked descriptions. The representativeness of the unpacked instance was varied along with the type of unpacking (direct vs. priming). In contrast to the prediction of Support Theory (Tversky & Koehler, 1994), we found no evidence that unpacking has a nonnegative effect on probability judgments (subadditivity). Instead, we found a negative effect with low representative direct unpackings (superadditivity). Our data suggest that probability judgments are proportional to the typicality of instances in the description.
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