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Direct linkTannock, Rosemary; Frijters, Jan C.; Martinussen, Rhonda; White, Erin Jacquelyn; Ickowicz, Abel; Benson, Nancy J.; Lovett, Maureen W. – Journal of Learning Disabilities, 2018
To evaluate the relative efficacy of two reading programs with and without adjunctive stimulant medication for children with attention-deficit/hyperactivity disorder and comorbid reading disorder (ADHD+RD). Sixty-five children (7-11 years in age) were assigned randomly to one of three intensive remedial academic programs (phonologically or…
Descriptors: Intervention, Attention Deficit Hyperactivity Disorder, Comorbidity, Child Behavior
Download full textSomers, Marie-Andrée; Zhu, Pei; Jacob, Robin; Bloom, Howard – MDRC, 2013
In this paper, we examine the validity and precision of two nonexperimental study designs (NXDs) that can be used in educational evaluation: the comparative interrupted time series (CITS) design and the difference-in-difference (DD) design. In a CITS design, program impacts are evaluated by looking at whether the treatment group deviates from its…
Descriptors: Research Design, Educational Assessment, Time, Intervals
