How do I know my child needs testing? -- What is involved in a testing evaluation? -- Who is qualified to conduct the evaluation? -- The tests : what are they and what do they do? -- What do all the numbers mean? -- Dyslexia -- Attention-Deficit/Hyperactivity disorder -- Nonverbal learning disorders and Asperger syndrome -- Autism and pervasive developmental disorder -- Mathematics disorder and disorder of written expression -- Children at the extremes : mental retardation and giftedness -- Depression, anxiety, and other psychological concerns.