False memory in schizophrenia patients with and without delusions

R. Bhatt, K.R. Laws, P. J. McKenna

    Research output: Contribution to journalArticlepeer-review

    35 Citations (Scopus)

    Abstract

    Delusions are fixed ‘false beliefs’ and, although a hallmark feature of schizophrenia, no previous study has examined if delusions might be related to ‘false memories’. We used the classic Deese–Roediger–McDermott (DRM) paradigm to compare false memory production in schizophrenia patients who were currently experiencing delusions (ED), patients not experiencing delusions (ND) and healthy control participants. The ED group recalled twice as many false-positive memories (i.e., memory for words not previously seen) as both the controls and crucially, the ND group. Both patient groups also recognised fewer correct words than the healthy controls and both showed greater confidence in their false memories; however, on the recognition task, the ED group made more false-negative (i.e. rejecting previously seen words) high confidence responses than the ND group.
    Original languageEnglish
    Pages (from-to)260-265
    JournalPsychiatry Research
    Volume178
    Issue number2
    DOIs
    Publication statusPublished - 2010

    Keywords

    • false memory
    • knowledge corruption
    • recall
    • recognition

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