量尺穩定性評估標準之探究

Investigation of the Criteria for Assessing Equating Consistency

曾建銘(Chien-Ming Cheng)

《測驗學刊》 58卷2期 (2011/06) Pp. 291-316

https://doi.org/10.7108/PT.201106.0291

摘要

The two commonly used criteria in assessing equating consistency for a potential scale drift-direct equating (versus indirect equating) and equating in a circle (versus identity equating) were studied through simulation. The chained equipercentile and linear methods were used for equating when population difference in ability in terms of the standardized mean difference (SMD) in anchor scores were observed with a wide range of values in the anchor test equating design. For the equipercentile method, when the obtained SMD values were less than 1, the differences between the direct and indirect equatings, or between the circular and identity equatings were small and trivial. When the obtained SMD values were greater than 1, the differences of the conversions between the indirect and direct equatings, or between the circular and identity equatings appeared to be substantially large. For the linear method, the differences between the two conversions appeared to be substantially large when the SMD values were very small.

關鍵字

同一等化 ； 直接等化 ； 連鎖等百分比等化 ； 連鎖線性等化 ； 循環等化 ； 量尺穩定性 ； 間接等化

並列摘要

The two commonly used criteria in assessing equating consistency for a potential scale drift-direct equating (versus indirect equating) and equating in a circle (versus identity equating) were studied through simulation. The chained equipercentile and linear methods were used for equating when population difference in ability in terms of the standardized mean difference (SMD) in anchor scores were observed with a wide range of values in the anchor test equating design. For the equipercentile method, when the obtained SMD values were less than 1, the differences between the direct and indirect equatings, or between the circular and identity equatings were small and trivial. When the obtained SMD values were greater than 1, the differences of the conversions between the indirect and direct equatings, or between the circular and identity equatings appeared to be substantially large. For the linear method, the differences between the two conversions appeared to be substantially large when the SMD values were very small.

並列關鍵字

chained equipercentile equating ； chained linear equating ； circular equating ； direct equating ； identity equating ； indirect equating ； scale stability

參考文獻

(Dorans, N. J., & Feigenbaum,M. D. (1994). Equating issues engendered by changes to the SAT and PSAT/NMSQT (ETS Research Memorandum 94-10). Princeton, NJ: Educational Testing Service.).

Angoff, W. H.(1987).Technical and practical issues in equating: A discussion of four papers.Applied Psychological Measurement.11,291-300.

Brennan, R. L.,Kolen, M. J.(1987).Some practical issues in equating.Applied Psychological Measurement.11,279-290.

Cook, L. L.,Petersen, N. S.(1987).Problems related to the use of conventional and item response theory equating methods in less than optimal circumstances.Applied Psychological Measurement: Issues and Practice.10,37-45.

Cope, R. T.(1987).How well do the Angoff design V linear equating methods compare with the Tucker and Levine methods?.Applied Psychological Measurement.11(2),143-149.