Quick Test Inter-Form Reliability in Diverse Clinical Groups and the Effect of Age Correction Factor

Abstract

All three forms of the Quick Test were administered to 156 patients who were divided into the following categories: brain-damaged, questionably brain-damaged, psychiatric disordered, and controls. High Pearson r correlations for all forms for all groups indicate excellent reliability. Evidence is presented that indicates the age correction factor is excessive and results in elevated IQ scores for older Ss.