When making decisions, individuals frequently have to incorporate information from multiple uncertain sources. In order to do so, they must combine this information in some way. When the uncertainty information is presented in the form of a probability of accuracy, how is this information combined? A questionnaire study investigated how individuals make use of accuracy information when the sources' probability of accuracy varied. The results suggest that participants make use of accuracy information to calculate a weighted-average that is biased in the direction of the most accurate source.