Edited by Eliane Segers and Paul van den Broek
[Not in series 206] 2017
► pp. 333–348
To be diagnosed as a specific learning disorder, the influence of ineffective instruction has to be excluded in dyslexia. Because the quality of ‘instruction-as-usual’ shows great variation, early intervention has been advocated as a tool to study dyslexia. There are two contrasting views. The first view is that early intervention sheds light on the causal relationship between targeted cognitive precursors and dyslexia. In contrast, the response-to-intervention approach (RTI) advocates that intervention is a way to exclude poor instruction as a cause of dyslexia. Family risk intervention studies are described as exponent of the first approach, followed by some examples of RTI. It is concluded that the cause-excluding approach is more supported by the evidence than the cause-supporting view.