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Peer reviewedFischer, Donald G.; And Others – Educational and Psychological Measurement, 1978
The empirical validity of Ertl's brain wave analyzer was investigated by the known contrasted groups method. Thirty-two academically talented and 16 academically handicapped were compared on four Primary Mental Abilities tests, two Sequential Tests of Educational Progress measures, and seven Brain Wave Analyzer measures. (Author/JKS)
Descriptors: Academically Gifted, Achievement Tests, Biomedical Equipment, Foreign Countries
