The RIAS/WRAT4-DIR software evaluates discrepancies between a student’s RIAS/RIST scores and his or her WRAT4 scores.
Compare general ability levels to achievement levels
- Provides information that may help you determine special education eligibility and the presence of specific learning disabilities in students.
- Two types of scoring methodologies are used to derive the discrepancy scores and to evaluate not only the statistical significance of the score but also its prevalence within the population:
- The simple difference method examines the difference between an obtained RIAS score and an obtained WRAT4 score.
- The predicted-achievement method uses the individual’s obtained RIAS score to predict his or her performance on the WRAT4; it then examines the difference between the predicted WRAT4 score and the individual’s obtained WRAT4 score.
- Generates three discrepancy reports (with a total of 40 discrepancy scores): the RIST/WRAT4 Discrepancy Interpretive Report, the RIAS/WRAT4 Discrepancy Interpretive Report, and the RIAS/WRAT4 Total Battery Discrepancy Interpretive Report.