Open AccessITEM‐ITEM CURVES AND CONSISTENT MENTAL TEST PARAMETER ESTIMATES 1
Author(s) -
Levine Michael V.
Publication year - 1976
Publication title -
ets research bulletin series
Language(s) - English
Resource type - Journals
eISSN - 2333-8504
pISSN - 0424-6144
DOI - 10.1002/j.2333-8504.1976.tb01122.x
Subject(s) - test (biology) , item response theory , statistics , mathematics , item analysis , econometrics , equating , psychology , psychometrics , rasch model , paleontology , biology
It is shown that empirical mental test P ‐ P plots are approximately‐equal to theoretical item‐item curves, at least for long tests administered to many people. This result is important because it leads to (1) a distribution free method for estimating points on item‐item curves, (2) a general method for defining estimates of item parameters and (3) the only parameter estimation method known to be consistent for some of the most important aptitude test models.