Advertisement

Reply to: The Choice of Prior in Bayesian Modeling of the Information Sampling Task

  • Daniel Bennett
    Affiliations
    School of Psychological Sciences, The University of Melbourne, Melbourne, Australia

    Department of Finance, The University of Melbourne, Melbourne, Australia
    Search for articles by this author
  • Murat Yücel
    Affiliations
    School of Psychological Sciences and the Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Melbourne, Australia
    Search for articles by this author
  • Carsten Murawski
    Correspondence
    Address correspondence to Carsten Murawski, Ph.D., Brain, Mind & Markets Laboratory, The University of Melbourne, Level 12, 198 Berkeley Street, Victoria 3010, Australia.
    Affiliations
    Department of Finance, The University of Melbourne, Melbourne, Australia
    Search for articles by this author
      In a previous article (
      • Bennett D.
      • Oldham S.
      • Dawson A.
      • Parkes L.
      • Murawski C.
      • Yücel M.
      Systematic overestimation of reflection impulsivity in the Information Sampling Task.
      ), we detailed an error of statistical inference in P(correct), one of two outcome metrics for the Information Sampling Task (IST) (
      • Clark L.
      • Robbins T.W.
      • Ersche K.D.
      • Sahakian B.J.
      Reflection impulsivity in current and former substance users.
      ), and showed how this error was likely to lead to biased estimation of reflection impulsivity by standard analysis code. We also provided an alternative formulation of this measure that more accurately reflects the statistical structure of the IST.
      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'

      Subscribe:

      Subscribe to Biological Psychiatry
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect

      References

        • Bennett D.
        • Oldham S.
        • Dawson A.
        • Parkes L.
        • Murawski C.
        • Yücel M.
        Systematic overestimation of reflection impulsivity in the Information Sampling Task.
        Biol Psychiatry. 2017; 82: e29-e30
        • Clark L.
        • Robbins T.W.
        • Ersche K.D.
        • Sahakian B.J.
        Reflection impulsivity in current and former substance users.
        Biol Psychiatry. 2006; 60: 515-522
        • Axelsen M.C.
        • Jepson J.R.M.
        • Bak N.
        The choice of prior in Bayesian modeling of the Information Sampling Task.
        Biol Psychiatry. 2018; 83: e59-e60
        • Huq S.F.
        • Garety P.A.
        • Hemsley D.R.
        Probabilistic judgements in deluded and non-deluded subjects.
        Q J Exp Psychol A. 1988; 40: 801-812
        • Hauser T.U.
        • Moutoussis M.
        • Iannaccone R.
        • Brem S.
        • Walitza S.
        • Drechsler R.
        • et al.
        Increased decision thresholds enhance information gathering performance in juvenile obsessive-compulsive disorder (OCD).
        PLoS Comput Biol. 2017; 13: e1005440

      Linked Article

      • The Choice of Prior in Bayesian Modeling of the Information Sampling Task
        Biological PsychiatryVol. 83Issue 12
        • Preview
          The Information Sampling Task (IST) was introduced in Clark et al. (1) as a measure of reflection impulsivity. Performance on the IST is evaluated through the average number of boxes opened for each trial of the test, whether the chosen color was in majority or not, and “the probability of the subject being correct at the point of decision [P(correct)]” (1). P(correct) is proposed calculated as a per-trial probability:
        • Full-Text
        • PDF