Ketanji Brown Jackson Questions Expert Testimony on Intellectual Disability

Understanding Intellectual Disability Diagnosis

• 💡 Justice Jackson questioned the respondent attorney regarding the 'variables' involved in diagnosing an intellectual disability.
• 📌 The American Association on Intellectual Disabilities argues that a diagnosis requires considering too many variables beyond a single test score.
• 🧠 This includes the validity of test scores, convergence with other scores, and qualitative information, suggesting a holistic evaluation is necessary.

Expert Testimony and Legal Standards

• ⚖️ The discussion highlighted the distinction between clinicians evaluating evidence and courts applying the law.
• 🎯 An expert witness's role is to look at all information, including test scores, to make a determination, sometimes indicating that categorical rules can be unhelpful.
• ⚠️ The court must be mindful of the legal standard set by Atkins, which prohibits capital punishment for individuals with intellectual disabilities.
• 🎤 The case involves evaluating arguments for or against categorical rules in determining intellectual disability, with potential for lower federal courts and the Supreme Court to weigh in.