Based on the DSM-IV-TR, mental retardation is diagnosed based on an IQ of approximately 70 or below, in addition to impairment in:

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According to DSM-IV-TR, mental retardation is diagnosed based on an IQ of approximately 70 or below, in addition to impairment in adaptive behavior. Adaptive behavior refers to a person's ability to perform daily activities and navigate social situations. While impairment in academic achievement, social skills, and attention may be present, they are not necessary for a diagnosis of mental retardation.

Based on the DSM-IV-TR, Mental Retardation Is Diagnosed Based on an IQ