Positive confirmation bias in the acquisition of information

Martin Jones, Robert Sugden

    Research output: Working paperDiscussion paper

    388 Downloads (Pure)


    An experiment is reported which tests for positive confirmation bias in a setting in which individuals choose what information to buy, prior to making a decision. The design – an adaptation of Wason’s selection task – reveals the use that subjects make of information after buying it. Strong evidence of positive confirmation bias, in both information acquisition and information use, is found; and this bias is found to be robust to experience. It is suggested that the bias results from a pattern of reasoning which, although producing sub-optimal decisions, is internally coherent and which is self-reinforcing.
    Original languageEnglish
    PublisherUniversity of Dundee
    Publication statusPublished - 2000

    Publication series

    NameDundee Discussion Papers in Economics
    PublisherUniversity of Dundee
    ISSN (Print)1473-236X


    • Positive confirmation bias
    • Selection task
    • Information acquisition

    Fingerprint Dive into the research topics of 'Positive confirmation bias in the acquisition of information'. Together they form a unique fingerprint.

    Cite this