A meta-analysis by Tran, Sanchez, Arellano, and Swanson (2011) of the published RTI literature found that the magnitude of effect size (ES) between responders and low responders at posttest was significantly moderated by the pretest ES and the type of dependent measure administered, whereas no significant moderating effects were found in the mixed…

Discussion of conceptual and methodological aspects of reading intervention research focuses on nine specific design limitations of previous intervention research; ways to measure and analyze change as a function of development, treatment intervention and ecological influences; assumptions of individual growth models; and advantages, conditions,…

In agreement with Coles (EC 220 146), the article comments on the poor quality of research in the learning disability field, and Coles'"interactivity" theory as an alternative to the neurological-deficit theory which is applied to the problem of classification, intervention, and a societal approach. (DB)