Abstract
The present study is an investigation of the predictive validity and test-retest reliability of a new readiness instrument, the Basic School Skills Inventory (BSSI). Scores obtained by 90 children in kindergarten on the BSSI were used to predict later teacher ratings of their performance in first grade. Test-retest reliability was estimated using a method developed for criterion-referenced measures, and sex and ethnic differences in test scores were examined. It was concluded that the BSSI total score provided an effective and highly reliable means of predicting teachers' ratings of first-grade performance.
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