Open AccessTHE PREDICTED AND OBSERVED EFFECT OF CHANCE ON MULTIPLE‐CHOICE TEST VALIDITY *
Author(s) -
Plumlee Lynnette B.
Publication year - 1953
Publication title -
ets research bulletin series
Language(s) - English
Resource type - Journals
eISSN - 2333-8504
pISSN - 0424-6144
DOI - 10.1002/j.2333-8504.1953.tb00035.x
Subject(s) - test (biology) , variance (accounting) , external validity , psychology , criterion validity , mathematics , statistics , econometrics , construct validity , psychometrics , economics , paleontology , accounting , biology
Assuming chance to be fully operative, the predicted effect of chance success on test validity when answer options are supplied depends on the number of options, the difficulty of the test and the variance of test scores. Predicted validity values are compared with empirical validity values in an experiment which used the same mathematics test items with and without answer options.