A computer-administered schematizing test was used to assess three measures of leveling-sharpening: accuracy scores, incremental difference scores, and rate of change scores. Reliability and correlational analyses of 119 subjects' responses showed that the mean accuracy measure was superior to the ranking accuracy, incremental error, incremental discrepancy, and response-lag measures. Analysis also indicated that a 50-trial version of the schematizing test would be as reliable as a 150-trial version.
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