Maximizing test validity by item selection

1 June 1956

journal article
research article
Published by Cambridge University Press (CUP) in Psychometrika

Vol. 21 (2) , 153-164
https://doi.org/10.1007/bf02289096

Abstract

The exact condition for discardingk items from a test in order to obtain a residual test with higher validity is derived. A proof that validity always increases is given for the casek=1. The lack of uniqueness of maximum validity when achieved by use of the condition is discussed. With the use of additional restrictions on items to be included in the initial test, a practical test construction procedure which has several advantages over previous methods is developed. The homogeneity of tests constructed by the method is discussed, and applications are given.

Keywords

This publication has 13 references indexed in Scilit:

Sampling Fluctuations Resulting from the Sampling of Test Items
Psychometrika, 1955
Maximizing the Discriminating Power of a Multiple-Score Test
Psychometrika, 1953
The effectiveness of short methods for calculating correlation coefficients.
Psychological Bulletin, 1952
Coefficient alpha and the internal structure of tests
Psychometrika, 1951
A Successive Approximation Method of Maximizing Test Validity
Psychometrika, 1951
Theory of mental tests.
Published by American Psychological Association (APA) ,1950
THE PRECISION OF DISCRIMINANT FUNCTIONS
Annals of Eugenics, 1940
A rapid method of selecting test items.
Journal of Educational Psychology, 1938
Item Selection by Means of a Maximizing Function
Psychometrika, 1936
RELATIONS BETWEEN TWO SETS OF VARIATES
Biometrika, 1936