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Equating the Scores of the Prueba de Aptitud Academica and the Scholastic Aptitude Test PAA SAT

Angoff, William H.; Cook, Linda L.
Publication Year:
Report Number:
ETS Research Report
Document Type:
Page Count:
Subject/Key Words:
College Board, College Entrance Examinations, Equated Scores, Prueba De Aptitud Academica (PAA), Puerto Rico, Scholastic Aptitude Test (SAT), Spanish


The present study is a replication, in certain important respects, of an earlier study conducted by Angoff and Modu (1973) to develop algorithms for converting scores expressed on the College Board Scholastic Aptitude Test (SAT) scale to scores expressed on the College Board Prueba de Aptitud Academica (PAA) scale, and vice versa. Two sets of items--one verbal and the other mathematical—were selected for use as anchor items for equating. The equating showed definite curvilinear relationships in both verbal and mathematical tests, indicating in this instance that both sections of the PAA are easier than the corresponding SAT sections. The results also showed good agreement between the current conversions and the 1973 Angoff-Modu conversions for the mathematical tests, but not so close agreement for the verbal tests. The reasons for the difference are (speculatively) attributed to improved methodology in the present study, especially for the more difficult verbal equating, and to the possibility of scale drift in one or the other test (or both tests) over the intervening 12 to 15 years since the last study. (22pp.)

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