Most responses to educational and psychological test items may be represented in binary form. However, such dichotomously scored items present special problems when an analysis of correlational interrelationships among the items is attempted. Two general methods of analyzing binary data are proposed by Horst to partial out the effects of…

This report forms the background for some current efforts to develop computer-based scoring systems for One-Word Sentence Completion data. A general discussion of response grouping problems and a three-way frequency table for data reduction are included. In addition, six "structural" response variables are defined. The report concludes with an…