The California Achievement Test (CAT) and Degrees of Reading Power (DRP) tests were administered to 28,000 students in 1981 and 33,000 students in 1982 in seven different grades to determine the relationship between the two instruments as measures of reading. The correlation between the tests ranged from .77 to .86. It was concluded that even though the publishers of both tests have maintained that their tests measured different aspects of reading achievement, either test may be used to make valid predictions to the other by use of locally constructed conversion tables.
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References
1.
College Entrance Examination Board . (1980). Degrees of Reading Power: Users manual; Test description score interpretation and technical information. New York: Author.
2.
College Entrance Examination Board . (1983). Degrees of Reading Power: Users guide PA series conversion tables and keys. New York: Author.
3.
CTB/McGraw-Hill . (1979). California Achievement Tests-Forms C and D Technical Bulletin 1. Monterey, CA: Author.
