What used to be referred to as "mental retardation" is now more properly called ________________, and is marked by a deficit in intelligence quotient and problems adapting to one's environment.

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The Answer of What used to be referred to as "mental retardation" is now more properly called ________________, and is marked by a deficit in intelligence quotient and problems adapting to one's environment.

What Used to Be Referred to as "Mental Retardation" Is