Children with attention deficit hyperactivity disorder (ADHD) are at increased risk of learning disabilities and frequently have developmental specific language impairments. Various studies have shown that 40–80% of children with learning disabilities have an SLI, and 25–40% of children with ADHD have learning disabilities. Barkley suggests that language, reading and motor problems are integral to ADHD. All of these skills are dependent on behavioural inhibition – a fundamental deficit in ADHD.