University of Hertfordshire Research Archive

        JavaScript is disabled for your browser. Some features of this site may not work without it.

        Browse

        All of UHRABy Issue DateAuthorsTitlesThis CollectionBy Issue DateAuthorsTitles

        Arkivum Files

        My Downloads
        View Item 
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item

        Random walk models of binary choice : the effect of deadlines in the presence of assymetric payoffs

        Author
        Kornbrot, D.
        Attention
        2299/6066
        Abstract
        Random walk models of binary choice were evaluated using line length discrimination tasks of varying difficulty. Subjects' gained monetary payoffs when their responses were correct and lost when their responses were incorrect, or exceeded a prescribed deadline. The payoff structure heavily favoured one response. Mean latency for each stimulus was a linear function of information acquired for that stimulus, with the same residual motor time for favoured and unfavoured stimuli; supporting a random walk model in discrete time. For all levels of difficulty, responses given in error were never slower than the same responses given correctly. The difference between correct and error mean response times were independent of distance to the random walk boundaries; supporting a modified form of the sequential probability ratio test model and contradicting the predictions of relative judgment theory. Rate of gain of stimulus information per unit time was substantially larger for the unfavoured stimulus in the hard conditions and one easy condition, also contradicting the prediction of relative judgment theory. Subjects' placement of response criteria was neither optimal nor completely predicted by a linear learning model, suggesting a mixed decision strategy.
        Publication date
        1988
        Published in
        Acta Psychologica
        Published version
        https://doi.org/10.1016/0001-6918(88)90002-9
        Other links
        http://hdl.handle.net/2299/6066
        Metadata
        Show full item record
        Keep in touch

        © 2019 University of Hertfordshire

        I want to...

        • Apply for a course
        • Download a Prospectus
        • Find a job at the University
        • Make a complaint
        • Contact the Press Office

        Go to...

        • Accommodation booking
        • Your student record
        • Bayfordbury
        • KASPAR
        • UH Arts

        The small print

        • Terms of use
        • Privacy and cookies
        • Criminal Finances Act 2017
        • Modern Slavery Act 2015
        • Sitemap

        Find/Contact us

        • T: +44 (0)1707 284000
        • E: ask@herts.ac.uk
        • Where to find us
        • Parking
        • hr
        • qaa
        • stonewall
        • AMBA
        • ECU Race Charter
        • disability confident
        • AthenaSwan