Abstract
Attempts to justify methods for scoring objective test items such as by using 0 or 1 for dichotomous items re neither common nor convincing. A study of the possible bases for justifying scoring practices is being carried out as part of the International Test Commission project on Ideal Psychometric Standards. An ordinal basis for such a justification is proposed, and it will be shown that the usual method for scoring dichotomous items meets the ordinal requirement, whereas the usual method for scoring other polytomous items does not. The implications of these results will be discussed and illustrated with data from several countries.
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