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Lambert, Matthew C.; Martin, Jodie; Epstein, Michael H.; Cullinan, Douglas; Katsiyannis, Antonis – Psychology in the Schools, 2021
The present study investigated the psychometric properties of the "Scales for Assessing Emotional Disturbance -- Third Edition: Rating Scale" (SAED-3 RS), which is designed for use in identifying students with emotional disturbance for special education services. The purposes of this study were to evaluate (a) the measurement invariance…
Descriptors: Disability Identification, Rating Scales, Test Items, Item Response Theory