摘要：We tested the predictions of HyGene (Thomas et al., 2008) that both divided attention at encoding
and judgment should affect the degree to which participants’ probability judgments violate the
principle of additivity. In two experiments, we showed that divided attention during judgment
leads to an increase in subadditivity, suggesting that the comparison process for probability
judgments is capacity limited. Contrary to the predictions of HyGene, a third experiment revealed
that divided attention during encoding leads to an increase in later probability judgment made
under full attention. The effect of divided attention during encoding on judgment was completely
mediated by the number of hypotheses participants generated, indicating that limitations in
both encoding and recall can cascade into biases in judgments.
关键词：working memory; probability judgment; hypothesis generation; support theory
