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Browsing by Author "Vrijhof, Bastiaan J."

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    Assessing and studying utility functions in psychometric decision theory
    (1983) Vrijhof, Bastiaan J.; Mellenbergh, Gideon J.; Van den Brink, Wulfert P.
    In educational and industrial psychology, utility theory has been used for determining optimal decision-theoretic procedures such as optimal test cutting scores for Pass/Fail and Accept/Reject decisions. Three methods are described for empirically assessing utility functions: (1) a method for scaling utility mixtures, consisting of a true achievement or criterion level combined with the probability of passing the test or being accepted, which is applicable for determining optimal decision procedures; (2) a method for scaling the utility as a function of the true achievement or criterion level; and (3) a graphical procedure for choosing a utility function. These methods are useful for investigating the utility structure. The three methods are investigated using 30 students in a hypothetical educational Pass/Fail situation and appear to yield reliable information. Moreover, an overview of the students’ utility structures is reported.