Dr. Schreck is a researcher who wants to know how accurate the autism diagnosis is for children below the age of 2 . Discuss what types of reliability and validity she might be interested in examining in her research

What will be an ideal response?

• Interrater reliability – would two or more clinicians diagnosis the same child with autism?
• Cross-time reliability – would the same clinician diagnosis the same child with autism at different ages?
• Internal validity – does the diagnosis of autism accurately represent the pattern of behaviors seen in children with autism?
• External validity – does the diagnosis mean something useful (e.g., how to treat)?