FACTORIALLY EQUIVALENT TEST BATTERIES

Parallel and alternate test forms have many uses. These tests are desi gned to be used interchangeably. The first criterion for interchangeab le tests is that they measure the same constructs. Multiple forms of a widely used multiple aptitude test battery were investigated using th e multiple groups analysis procedures of confirmatory factor analysis. Beginning with the model confirmed by Ree and Carretta (1994), 6 form s of the battery were tested. Total sample size was 15,120. Results sh ow a consistent factor structure across the 6 forms. When compared to the Form 8a prototype, Forms 8b, 9a, and 9b were found to be highly si milar, whereas the factor-variable parameter constraints for Forms 10a and 10b showed them to be less similar. Item-ordering effects did not produce inequality in Forms 8 and 9.