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Showing 1 to 1 of 1 for “"Developmental and difference"”.
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Memory for Meaning and Sound: A Test of the Developmental and Difference Theories of Mental Retardation.
… is implicit in the use of a "mental age" in standardized intelligence tests. The retarded adolescent who obtains a score comparable to that of the average 10 year old is said to have a mental age of 10. The term "retardation" itself denotes a slowing in development rather than any specific …