A Note on How to Conduct a Factor-Based PLS-SEM Analysis

A Note on How to Conduct a Factor-Based PLS-SEM Analysis

Ned Kock
Copyright: © 2015 |Pages: 9
DOI: 10.4018/ijec.2015070101
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Abstract

The composite-factor estimation dichotomy has been the epicenter of a long and ongoing debate among proponents and detractors of the use of the partial least squares (PLS) approach for structural equation modeling (SEM). In this brief research note the author discusses the implementation of a new method to conduct factor-based PLS-SEM analyses, which could be a solid step in the resolution of this debate. This method generates estimates of both true composites and factors, in two stages, fully accounting for measurement error. The author's discussion is based on an illustrative model in the field of e-collaboration. A Monte Carlo experiment suggests that model parameters generated by the method are asymptotically unbiased. The method is implemented as part of the software WarpPLS, starting in version 5.0. This note provides enough details for the method's implementation in other venues such as R and GNU Octave.
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Illustrative Model

Our discussion is based on the illustrative model depicted in Figure 1, which builds on an actual empirical study in the field of e-collaboration (Kock, 2005; 2008; Kock & Lynn, 2012). This illustrative model incorporates the belief that e-collaboration technology use (ijec.2015070101.m01) by teams of workers tasked with the development of new products in organizations (e.g., a new consulting service, a new car part) increases both team efficiency (ijec.2015070101.m02) and team performance (ijec.2015070101.m03). Team efficiency (ijec.2015070101.m04) is related to the speed and cost at which teams operate. Team performance (ijec.2015070101.m05) is related to how well the new products developed by teams perform in terms of sales and profits.

In this illustrative model ijec.2015070101.m06 is the path coefficient for the link going from factor ijec.2015070101.m07 to factor ijec.2015070101.m08; ijec.2015070101.m09 is the loading for the jth indicator of factor ijec.2015070101.m10; ijec.2015070101.m11 is the indicator error for the jth indicator of factor ijec.2015070101.m12; ijec.2015070101.m13 is the measurement error associated with ijec.2015070101.m14; and and ijec.2015070101.m15 is the structural error associated with ijec.2015070101.m16, which exists only for endogenous factors. An endogenous factor has at least one other factor pointing at it in the model.

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