Violation of the homogeneity of regression slopes assumption in ANCOVA for two-group pre-post designs: Tutorial on a modified Johnson-Neyman procedure

Aptitude-treatment interaction (ATI) effects are present when individuals demonstrate differential outcomes across treatments based upon aptitude\IeC {\textemdash }that is, any measurable individual characteristic, attribute, or ability (e.g., anxiety, learning style, motivation, prior knowledge). A...

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Bibliographic Details
Main Author: Johnson, Teresa R.
Format: Article
Language:English
Published: Université d'Ottawa 2016-10-01
Series:Tutorials in Quantitative Methods for Psychology
Subjects:
Online Access:http://www.tqmp.org/RegularArticles/vol12-3/p253/p253.pdf