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St. Clair, Travis; Hallberg, Kelly; Cook, Thomas D. – Journal of Educational and Behavioral Statistics, 2016
We explore the conditions under which short, comparative interrupted time-series (CITS) designs represent valid alternatives to randomized experiments in educational evaluations. To do so, we conduct three within-study comparisons, each of which uses a unique data set to test the validity of the CITS design by comparing its causal estimates to…
Descriptors: Research Methodology, Randomized Controlled Trials, Comparative Analysis, Time
Sibley, Margaret H.; Yeguez, Carlos E. – Grantee Submission, 2014
Objective: Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-5) A-criteria for ADHD were expanded to include new descriptors referencing adolescent and adult symptom manifestations. This study examines the effect of these changes on symptom endorsement in a sample of adolescents with ADHD (N = 259; age range = 10.72-16.70).…
Descriptors: Attention Deficit Hyperactivity Disorder, Parent Attitudes, Symptoms (Individual Disorders), Adolescents