The present thesis discusses relevant issues in education: learning disabilities including the role of comorbidity in LDs, and the use of research-based interventions. Studies (N=242) aimed to examine whether training using a nonverbal auditory-visual matching computer program, called Audilex, had a remedial effect in different learning disabilities, such as developmental dyslexia, attention deficit disorder and specific language impairment. The results confirmed that the intervention had positive intervention effects. Improvements in reading skills and also in students school behavior were...