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 replace formula scoring with rights scoring. The GRE instructions were changed to advise examinees to answer all questions. An anchor test design was used to equate verbal and quantitative measures. Focus was on determining what effects these changes and/or the equating (in the case of the verbal and quantitative measures) or the scaling (in the case of the analytical measure) had on the three GRE GT score scales--verbal, quantitative, and analytical. These changes could be manifested as either shifts in the score scales or changes in the constructs underlying the scales. Data were from a self-selected group of GRE examinees who took the GT for the first time between October 1980 and April 1982 and at least one additional time by June 1982. A total of 5,072 GRE examinees took the old version at least twice, and 2,353 took the old version first and then the new version. The 1981 changes had a small effect on the verbal score scale and a somewhat greater effect on the quantitative scale; these changes are attributed to a shift in the dimensionality of the factors underlying these measures. The effect on the analytical scale was quite large. Five data tables and three graphs conclude the document. (TJH)