ERIC Number: EJ723406
Record Type: Journal
Publication Date: 2005
Reference Count: 29
Technical Analysis of the Slosson Phonics and Structural Analysis Test
Erford, Bradley T.; Dutton, Jessica, L.
Educational and Psychological Measurement, v65 n6 p1011-1025 2005
Technical characteristics of Slosson Phonics and Structural Analysis Test (SP-SAT) scores were studied using three independent samples of boys and girls aged 6 years, 6 months, through 9 years, 11 months. A decision efficiency study (n = 100) resulted in a total predictive value of .86 (sensitivity = .95, specificity = .77, positive predictive power = .80, negative predictive power = .94). Item difficulty was .65 (median), and item discrimination was .52 (median). Inter item consistency was r = .93, .93, and .96 for scores on the Phonics Index, Structural Analysis Index, and SP-SAT total standard score, respectively (n = 375), whereas 2-week test-retest reliability was r = .90, .88, and .90 for scores on the same scales, respectively (n = 165). The SP-SAT yielded moderate to high concurrent validity coefficients when compared with the Wide-Range Achievement Test-Third Edition Reading subtest; Woodcock-Johnson: Tests of Achievement-Third Edition Letter-Word Identification, Word Attack, Passage Comprehension, and Writing Samples subtests; and Woodcock-Johnson: Tests of Achievement-Revised Dictation subtest. Practice and research implications are discussed.
Descriptors: Measurement Techniques, Test Validity, Phonics, Test Reliability, Young Children, Structural Analysis (Linguistics), Scores, Evaluation Methods, Reading Skills
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Publication Type: Journal Articles; Reports - Research
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