In an earlier post in March, I alerted readers to a new journal publication that presented a psychometrically sound rational and method for combining multiple intelligence test scores into a single grand estimate. Below is the formal APA reference: Go to link above for more info.
Schneider, W. J., Reynolds, C. R., McGrew, K. S., & Salekin, K. L. (2026). Life-and-death psychometrics: Generalizable best methods for combining scores in intellectual disability and other diagnostic assessments. Journal of Pediatric Neuropsychology, 12(2), 47–65.
I’m pleased to report that Dr. Joel Schneider has developed a free on-line web app that allows users to implement the recommended method. Thanks to Joel.
Click on image to enlarge for easy reading
