This paper described one part of an item response theory (IRT) feasibility study performed for the Aptitude Test portion of the Graduate Record Examinations (GRE). The dimensionality of the GRE verbal and analytical sections is discussed. The results of six different types of equating of the verbal section and four different types of equating of…

This research investigated the effect on estimated lower asymptotes of the instructions to Graduate Record Examination (GRE) examinees about how the test would be scored. This effect was assessed for four different verbal item types (analogies, antonyms, sentence completion, and reading comprehension) using a two-way, unweighted means analysis of…

This study examined the factor structure of the Graduate Record Examinations (GRE) General Test to appraise the extent to which an analytical factor could be identified that was distinguishable from verbal and quantitative factors. Full-information factor analysis was employed in several groups of undergraduate majors on items from one edition of…

Since The Graduate Record Examination-Verbal measures two factors (reading comprehension and discrete verbal ability), the unidimensionality of item response theory is violated. The impact of this violation was examined by comparing three ability estimates: reading, discrete, and all verbal. Both dimensions were highly correlated; the impact was…

In October 1981, the Graduate Record Examinations (GRE) Program introduced a new version of the General Test (GT) that differed from the previous version in three major ways. The GT was altered to: reduce the verbal measure's speededness and allow the addition of several quantitative items; delete two item types from the analytical measure; and…

This study addresses the test-disclosure-related need for more Graduate Record Examinations (GRE) General Test editions in a situation where the number of examinees is stable or declining. Equating is used to guarantee that examinees of different test editions are treated equitably. The data collection designs used in this study were: (1)…

Birnbaum's three-parameter logistic item response model was used to study guessing behavior of low ability examinees on the Graduate Record Examinations (GRE) General Test, Verbal Measure. GRE scoring procedures had recently changed, from a scoring formula which corrected for guessing, to number-right scoring. The three-parameter theory was used…