A sample of 131 10--14-year-old Dutch children with reading and spelling difficulties received a treatment for dyslexia. The treatment was computer-based and focused on learning to recognise and use the phonological and morphological structure of Dutch words. The treatment consisted of several modules, each addressing specific links between phonological concepts and the writing system. A process-oriented evaluation of this treatment showed a time course of effects that was specifically related to the timing of treatment components. The children showed a cascade of improvements that corresponded to the presentation order of the treatment modules. These findings indicate that the computerised treatment based on inferential algorithms provides an effective tool in the remediation of dyslexia.