The Work Extrinsic and Intrinsic Motivation Scale (WEIMS) is an 18-item measure of work motivationtheoretically grounded in self-determination theory (Deci & Ryan, 2000). The purpose of the presentresearch was twofold. First, the applicability of the WEIMS in different work environments wasevaluated. Second, its factorial structure and psychometric properties were assessed. Two samples ofworkers (military: N 465; civilians: N 192) voluntarily completed questionnaires. Using theWEIMS’s 3 indexes (work self-determination index, work self-determined and nonself-determinedmotivation, respectively), results of regression analyses were supportive of its ability to predict positiveand negative criteria in the workplace. Results also showed the adequacy of both its construct validity andinternal consistency. Its factorial structure was also invariant across samples. Finally, its quasi-simplexpattern and relationships with psychological correlates further supported the self-determination continuum.Overall, these findings provide evidence for the applicability as well as the reliability and validityof the WEIMS in organisational settings. Results are discussed in regard to the applicability ofself-determination theory to the workplace.
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