Graduation Year


Document Type




Degree Granting Department


Major Professor

Tammy Allen, Ph.D.

Committee Member

Walter Borman, Ph.D.

Committee Member

Marcia Finkelstein, Ph.D.


motivation, environmental support, discretionary behaviors, organizational citizenship behavior, counterproductive work behavior


Antecedents of organizational citizenship behaviors and counterproductive work behaviors have been studied in depth, focusing on both individual differences and environmental variables. However, motivation has been largely overlooked as a contributor to these voluntary behaviors. Self-Determination Theory, a motivational framework, posits that environmental support in the form of fulfilled basic psychological needs leads to activities geared towards growth and development, whereas a lack of environmental supports thwarts these attempts towards self-growth. It is hypothesized that environmental support will account for unique variance above and beyond previously studied antecedents of voluntary workplace behaviors. This was supported using hierarchical regression. It was also hypothesized that locus of control will moderate the effect of environmental support on voluntary behaviors, such that environmental support will play a larger role in people with an external locus of control, compared to those with an internal locus of control. This was not supported using moderated regression, but the trends suggest that future research in this area may be more successful. The implications for research and practice are discussed.