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AN APPLICATION OF TECHNIQUES TO SHORTEN TESTS AND INCREASE VALIDITY.

Two methods of item selection against an external criterion were used to build two short tests for selecting programming and computer maintenance students. The methods were: (a) sequential accretion of items so that at each iteration the item selected is the one leading to the largest increase in th...

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Publicado en:Journal of Applied Psychology Vol. 57; no. 1; pp. 90 - 93
Autor principal: Possum, John A.
Formato: Artículo
Publicado: American Psychological Association Feb73
Materias:
Educational tests & measurements
Test validity
Test interpretation
Academic achievement
Ability testing
College students
Computer programming
Mathematical analysis
Computer science
Acceso en línea:Ver este registro en EBSCOhost
Sumario:Two methods of item selection against an external criterion were used to build two short tests for selecting programming and computer maintenance students. The methods were: (a) sequential accretion of items so that at each iteration the item selected is the one leading to the largest increase in the correlation between the test and the criterion and (b) accretion of items in order of their declining item point biserial correlations with the criterion. There was no significant difference in the validity of tests built using either method. Both methods produced tests with cross-valid coefficients higher than the validity of the item pool and both were reasonably resistant to shrinkage.