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LEVY, IRWIN S. – 1967
IN ORDER TO DETERMINE THE RELIABILITY OF PERFORMANCE OF RETARDED ADOLESCENTS ON THE HARRIS REVISION OF THE GOODENOUGH DRAW-A-MAN TEST (DAM) AND WHETHER THE DECLINE IN PERFORMANCE WHICH OCCURS IN NORMAL ADOLESCENTS AT THE MID-TEENS ALSO OCCURS WITH RETARDED ADOLESCENTS, 213 MALE AND 130 FEMALE SUBJECTS, AGED 11-20 YEARS AND WITH IQ'S OF 56-72, IN…
Descriptors: Adolescents, Age, Age Differences, Exceptional Child Research
Peer reviewed Peer reviewed
Hopkins, Kenneth D.; Bracht, Glenn H. – American Educational Research Journal, 1975
The results of this study show that, below ten years of age, stability in IQ scores from group verbal tests is considerably below that for Stanford-Binet. Non-verbal IQ scores were found to have substantially less stability than verbal IQs. (Author/DEP)
Descriptors: Age Differences, Comparative Analysis, Elementary Secondary Education, Group Testing
Peer reviewed Peer reviewed
Chletsos, Peter N.; And Others – Journal of Research and Development in Education, 1989
This article presents evidence of the reliability and validity of a new paper-and-pencil test of proportional reasoning, Paper-and-Pencil Balance Beam Test. A Total of 627 individuals, aged 8-47, participated in the 3 studies discussed. Results support previous research which correlates performance on proportional reasoning problems with…
Descriptors: Age Differences, Cognitive Development, Elementary Secondary Education, Formal Operations
Chissom, Brad; And Others – 1978
The D-48 and D-70 (Dominoes) Tests, which are parallel forms of a non-verbal, cross-cultural test, were administered to 82 college students and 112 high school freshmen. Criterion scores were obtained on the Otis Quick Score and grade point average for the college students, and the Iowa Test of Basic Skills for the ninth-graders. Results showed a…
Descriptors: Academic Achievement, Age Differences, Culture Fair Tests, Grade 9