There is little discussion in the Design-Based Research (DBR) literature on how to design an intervention that has the potential to be highly effective. The act of designing is usually viewed as engineering something from theory or research on best practices. This paper challenges that universal belief and presents successful design as an…

In response to a previous article, the paper notes additional reasons for the deficit in basic research and theory in learning disabilities, stresses the need for more good systematic research using multiple methods, and suggests that a metatheory for learning disabilities is not yet possible or profitable. (DB)

This review of the history of learning disabilities (LD) suggests that creation of the LD category has served scientific, if not always, policy purposes. It finds that 40 years of research have produced inventive, creative tools that benefit both investigation and intervention and, most importantly, a better understanding of individual…