Open AccessREGIONS OF SIGNIFICANT CRITERION DIFFERENCES IN APTITUDE‐TREATMENT‐INTERACTION RESEARCH 1
Author(s) -
Cahen Leonard S.,
Linn Robert L.
Publication year - 1970
Publication title -
ets research bulletin series
Language(s) - English
Resource type - Journals
eISSN - 2333-8504
pISSN - 0424-6144
DOI - 10.1002/j.2333-8504.1970.tb00602.x
Subject(s) - aptitude , psychology , confidence interval , yield (engineering) , statistics , regression , regression analysis , interaction , mathematics , econometrics , physics , thermodynamics
Three techniques (Johnson‐Neyman, Potthoff, & Erlander & Gustavsson) for obtaining confidence regions for the difference between regression surfaces are compared. The techniques are potentially useful for analyzing data from aptitude‐treatment‐interaction research (ATI). The three techniques are found to yield substantially different sized confidence regions when applied to the same data, therefore possibly leading to different decisions in an aptitude‐treatment‐interaction study.