Capturing age-group differences and developmental change with the BASC Parent Rating Scales |
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Authors: | Baptiste Barbot Sascha Hein Suniya S. Luthar Elena L. Grigorenko |
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Affiliation: | 1. Pace University, New York, NY, USA;2. Yale University, New Haven, CT, USA;3. Arizona State University, Tempe, AZ, USA;4. Moscow State University for Psychology and Education, Moscow, Russia |
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Abstract: | Estimation of age-group differences and intra-individual change across distinct developmental periods is often challenged by the use of age-appropriate (but non-parallel) measures. We present a short version of the Behavior Assessment System (Reynolds & Kamphaus, 1998) Parent Rating Scales for Children (PRS-C) and Adolescents (PRS-A), which uses only their common-items to derive estimates of the initial constructs optimized for developmental studies. Measurement invariance of a three-factor model (Externalizing, Internalizing, Adaptive Skills) was tested across age-groups (161 mothers using PRS-C; 200 mothers using PRS-A) and over time (115 mothers using PRS-C at baseline and PRS-A five years later) with the original versus short PRS. Results indicated that the short PRS holds a sufficient level of invariance for a robust estimation of age-group differences and intra-individual change, as compared to the original PRS, which held only weak invariance leading to flawed developmental inferences. The importance of test–content parallelism for developmental studies is discussed. |
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Keywords: | BASC Parent Rating Scale Measurement invariance Scale parallelism Developmental change |
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