Development and preliminary validation of a psychometric measure of expertise : the generalized expertise measure (GEM)

Material Information

Title:
Development and preliminary validation of a psychometric measure of expertise : the generalized expertise measure (GEM)
Series Title:
Barry University Dissertations -- School of Education
Creator:
Germain, Marie-Line
Place of Publication:
Miami, Fla.
Publisher:
Barry University
Publication Date:
Language:
English
Physical Description:
xii, 186 leaves : ill. ; 28 cm

Thesis/Dissertation Information

Degree Disciplines:
Education

Notes

Abstract:
Expertise has become an engaging subject for research since the 1960s largely as a result of developments in artificial intelligence and in cognitive psychology. Today, the development of employee expertise is described as a strategic imperative for ever changing organizations in a hyper competitive economic environment. However, the lack of an adequate assessment tool for expertise has hindered empirical research. To improve on previously few developed instruments, the aim of this study is to conceptually and empirically develop the Generalized Expertise Measure (GEM) and to examine its psychometric properties in two managerial samples. Schwab’s (1980) three stages of measure development process were followed: generation of individual items, scale development, and psychometric examination of the new measure. Once the items were generated and the scale developed, the factor structure of the GEM was examined employing AMOS 6.0 Confirmatory Factor Analysis (CFA) procedures for an independent employee sample (N = 165). Results of the CFA indicated that the proposed two-dimensional model of the GEM needed improvement. An Exploratory Factor Analysis (EFA) was then performed with a second employee sample (N = 142) using SPSS 14.0 and other statistical methods were employed to assess the GEM’s levels of reliability and validity, in accordance with established psychometric principles. The EFA and the Promax rotation resulted in the elimination of five items. The retained variables were then tested through a CFA, which allowed the reduction of the GEM to 16 items. The model was finally retested with the first employee sample (N = 165). The final scale includes two non-orthogonal subscales with a total of 16 items. The two factors fall under two distinct categories: Evidence based Expertise and Self-Enhancement-based Expertise, the latter being a new proposed dimension to the current construct of expertise. Although a good model fit was obtained, (χ2 (95) = 165.0, p = .000, CFI = .954, RMSEA = .072) future research should further investigate the psychometric properties of the GEM. Until further refinement, the Generalized Expertise Measure appears to be useful for studies in varied industries and is a contribution to the fields of Human Resource Development and Industrial / Organizational Psychology. ( , )
Subject:
Generalized Expertise Measure (GEM).
Thesis:
Thesis (Ph.D.)--Barry University, 2006.
Bibliography:
Includes bibliographical references (leaves 143-168).

Record Information

Source Institution:
Barry University
Holding Location:
Barry University Archives and Special Collections
Rights Management:
Copyright Marie-Line Germain. Permission granted to Barry University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Resource Identifier:
HD4904.7 .G47 2006_GermainMarie_Line ( BU-Local )
Classification:
HD4904.7 .G47 2006 ( lcc )

BUDC Membership

Aggregations:
Barry University
Theses and Dissertations