top banner top banner

Search publications:

Impact on Cronbach's alpha of simple treatment methods for missing data

Full text PDF
Bibliographic information: BibTEX format RIS format XML format APA style
Cited references information: BibTEX format APA style
Doi: 10.20982/tqmp.12.1.p057

Béland, Sébastien , Pichette, Francois , Jolani, S.
Keywords: Cronbach’s alpha coefficient , Missing data , Missing completely at random , Missing at random , Simulation study
(no sample data)   (no appendix)

The scientific treatment of missing data has been the subject of research for nearly a century. Strangely, interest in missing data is quite new in the fields of educational science and psychology (Peugh & Enders, 2004; Schafer & Graham, 2002). It is now important to better understand how various common methods for dealing with missing data can affect well-used psychometric coefficients. The purpose of this study is to compare the impact of ten common fill-in methods on Cronbach’s alpha (1951). We use simulation studies to investigate the behavior of alpha in various situations. Our results show that multiple imputation is the most effective method. Furthermore, simple imputation methods like Winer imputation, item mean, and total mean are interesting alternatives for specific situations. These methods can be easily used by non-statisticians such as teachers and school psychologists.

Pages © TQMP;
Template last modified: 2017-16-01.
Page consulted on .
Be informed of the upcoming issues with RSS feed: RSS icon RSS