Willingness to Answer Multiple-Choice Questions as Manifested Both in Genuine and in Nonsense Items

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Abstract
A formal description of partial knowledge, ability, and willingness to answer multiple-choice items put forward by Hutchinson (1977, 1980) makes predictions about response behavior on items for which none of the stated alternatives is correct. Cross and Frary (1977) obtained data on subjects' responses under these conditions. Hutchinson's theory is shown to account for a moderate proportion of the variation between subjects in the number of nonsense items they respond to. Alternative versions of the theory were compared, and one which implies the existence of partial knowledge was found to be better than one which implies that an appropriate measure of ability is obtained by applying the conventional "correction for guessing."