title: Decisions in Motion: Decision Dynamics during Intertemporal Choice reflect Subjective Evaluation of Delayed Rewards.
abstract: People tend to discount rewards or losses that occur in the future. Such delay discounting has been linked to many behavioral and health problems, since people choose smaller short-term gains over greater long-term gains. We investigated whether the effect of delays on the subjective value of rewards is expressed in how people move when they make choices. Over 600 patrons of the RISK LAB exhibition hosted by the Science Gallery Dublin(TM) played a short computer game in which they used a computer mouse to choose between amounts of money at various delays. Typical discounting effects were observed and decision dynamics indicated that choosing smaller short-term rewards became easier (i.e., shorter response times, tighter trajectories, less vacillation) as the delays until later rewards increased. Based on a sequence of choices, subjective values of delayed outcomes were estimated and decision dynamics during initial choices predicted these values. Decision dynamics are affected by subjective values of available options and thus provide a means to estimate such values.
authors: School of Psychology, National University of Ireland, Galway, University Road, Galway, Ireland.
authors: Denis
authors: D
authors: O'Hora
authors: School of Psychology, National University of Ireland, Galway, University Road, Galway, Ireland.|Department of Clinical, Educational &Health Psychology, University College London, 1-19 Torrington Place, London WC1E 7HB, UK.
authors: Rachel
authors: R
authors: Carey
authors: School of Psychology, National University of Ireland, Galway, University Road, Galway, Ireland.
authors: Aoife
authors: A
authors: Kervick
authors: Insight Centre for Data Analytics, National University of Ireland, Galway, University Road, Galway, Ireland.|Department of Computing, Creative Media &Information Technology, Institute of Technology, Tralee, Dromtacker, Tralee, Co. Kerry, Ireland.
authors: David
authors: D
authors: Crowley
authors: Insight Centre for Data Analytics, National University of Ireland, Galway, University Road, Galway, Ireland.
authors: Maciej
authors: M
authors: Dabrowski