Algorithms and R Codes for the Analysis of Reliability and Unidimensionality of Measurement Scales:Application to Total Quality Management Practices
Date
2014-06-10
Authors
Munoz, Juan F
Herzallah, Ahmad M.
Gutiérrez-Gutiérrez, Leopoldo
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Measurement scales used by many studies in social sciences must satisfy some
psychometric conditions to make them valid and reliable. Some conditions are
verified by using different statistical techniques within an iterative process,
which generally requires a considerable amount of time for the user. We
present a computational algorithm for the reliability and the study of
unidimensionality associated to measurement scales. The suggested algorithm
is implemented using the popular statistical software R. Codes are written in
the form of R functions and therefore can be easily used. Assuming real data
extracted from the industrial sector, the proposed R codes are used to study the
reliability and the unidimensionality of measurement scales. This can serve as
a practical guide to show how to use the R functions.
Description
Keywords
Questionnaires , Cronbach’s Alpha , Principal Component Analysis , Confirmatory Factor Analysis