Date of Award

3-19-1997

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Teaching & Learning

First Advisor

John Delane Williams

Abstract

The purpose of this study was to investigate the role of statistical computer programs in educational research, specifically for the method of structural equations and path analysis. This method encompasses a wide array of research methods, including regression analysis and analysis of covariance. This method also includes the use of visual representation of structural equations through path diagrams.The three structural equation software packages Amos, EQS, and LISREL were compared to evaluate their capabilities in research. The packages capabilities in research were evaluated by investigating the way in which each package read in data (including matrices), handled missing values, transformed data and performed preliminary statistics. The packages' were also compared as to the number and type of solution methods and fit indices they offered, as well as their programming processes.The three packages were also scrutinized for their usefulness as instructional tools. The manuals and on-line help provided by each package were compared to each other. Eleven subjects then compared the three packages for clarity and ease of use of the interfaces.The author developed manuals to assist the subjects in their comparison of the three packages. The developed manuals described using the packages for a regression analysis, simultaneous equations model, confirmatory factor analysis and complete structural equations model. Each of the developed manuals included a brief introduction to the Windows interface and explanation of preliminary statistics where possible.Both the author and most of the subjects preferred EQS mainly due to its balance between graphics and text, as well as its abilities to work with data. The reactions of the subjects to the packages were compared with respect to the age, education and experience of each subject. Relationships were found between the use of graphics and age, statistical experience and program complexity, and computer experience and ability to use the Windows interface.

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