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The validity of IQ scores derived from readiness screening tests
Author(s) -
Telegdy Gabriel A.
Publication year - 1976
Publication title -
psychology in the schools
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 75
eISSN - 1520-6807
pISSN - 0033-3085
DOI - 10.1002/1520-6807(197610)13:4<394::aid-pits2310130406>3.0.co;2-t
Subject(s) - peabody picture vocabulary test , psychology , intelligence quotient , test validity , developmental psychology , convergent validity , test (biology) , correlation , predictive validity , psychometrics , vocabulary , standardized test , cognition , psychiatry , mathematics education , paleontology , linguistics , philosophy , geometry , mathematics , internal consistency , biology
Abstract The Screening Test of Academic Readiness (STAR) and the Peabody Picture vocabulary Test (PPVT) were administered to 52 kindergarten children to reveal the convergent validity of IQ scores derived from the STAR. A low but significant correlation of.45 was found. However, the mean PPVT‐IQ was 98 (in keeping with the expected mean of 100), while the mean STAR‐IQ was 119. This 21‐point difference was highly significant. These findings raise doubts about the validity of the deviation IQs derived from the STAR. Users of the test are encouraged to use an independent measure of IQ rather than place unwarranted reliance on the derived IQs.