Repetitive Psychometric Measures: Equating Alternate Forms

The 20 alternate forms of five psychometric measures (Number Facility, Visualization, Speed of Perception, Speed of Closure, and Flexibility of Closure) were administered to two samples of 544 and 508 college students. All alternate forms but that for Number Facility were found to be reliably different in difficulty level. Statistical weights derived from either sample were found to decrease variability of alternate form means in the other sample. Correction factors were provided for the 20 alternate forms of all but the Number Facility measure.