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Farmer, Ryan L.; Floyd, Randy G.; Reynolds, Matthew R.; Kranzler, John H. – Psychology in the Schools, 2014
The most global score yielded by intelligence tests, IQs, are supported by substantial validity evidence and have historically been central to the identification of intellectual disabilities, learning disabilities, and giftedness. This study examined the extent to which IQs measure the ability they target, psychometric "g." Data from…
Descriptors: Intelligence Quotient, Factor Analysis, Intelligence Tests, Psychometrics
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Bergeron, Renee; Floyd, Randy G.; Shands, Elizabeth I. – Education and Training in Developmental Disabilities, 2008
Mental retardation (MR) has traditionally been defined as a disorder in intellectual and adaptive functioning beginning in the developmental period. Guided by a federal definition of MR described in the Individuals with Disabilities Education Act, it is the responsibility of each of the United States to describe eligibility guidelines for special…
Descriptors: Eligibility, Mental Retardation, Intelligence Tests, Intelligence Quotient