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Kevin McGrew, PhD
Educational Psychologist
An attempt to provide understandable and up-to-date information regarding intelligence testing, intelligence theories, personal competence, adaptive behavior and intellectual disability (mental retardation) as they relate to death penalty (capital punishment) issues. A particular focus will be on psychological measurement, statistical and psychometric issues.
Does age of onset in legal contexts mean chronological or developmental age? This is a live issue in the death penalty context because in Atkins v. Virginia, the United States Supreme Court found it cruel and unusual punishment under the Eighth Amendment to execute mentally retarded offenders. While the Atkins Court cited favorably to clinical definitions of mental retardation, it left open to the states to define what mental retardation means for purposes of the death penalty.
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