The Reynolds Intellectual Assessment Scales: Measurement Invariance Across Four Language Groups

The Reynolds Intellectual Assessment Scales (RIAS) measures general intelligence and its two main components, verbal and nonverbal intelligence, each comprising of two subtests. The RIAS has been recently standardized in Denmark, Germany, Switzerland, and Spain. Using the standardization samples of the U.S. ( n = 2,438), Danish ( n = 983), German ( n = 2,103), and Spanish ( n = 1,933) versions of the RIAS, this study examined measurement...