Early in this century, most empirically oriented psychologists believed that all motivation was based in the physiology of a set of non-nervous system tissue needs. The theories of that era reflected this belief and used it in an attempt to explain an increasing number of phenomena. It was not until the 1950s that it became irrefutably clear that much of human motivation is based not in these drives, but rather in a set of innate psychological needs. Their physiological basis is (...) less understood; and as concepts, these needs lend themselves more easily to psycho logical than to physiological theorizing. The convergence of evidence from a variety of scholarly efforts suggests that there are three such needs: self-determination, competence, and interpersonal relatedness. This book is primarily about self-determination and competence (with particular emphasis on the former), and about the processes and structures that relate to these needs. The need for interpersonal relat edness, while no less important, remains to be explored, and the findings from those explorations will need to be integrated with the present theory to develop a broad, organismic theory of human motivation. Thus far, we have articulated self-determination theory, which is offered as a working theory-a theory in the making. To stimulate the research that will allow it to evolve further, we have stated self-determination theory in the form of minitheories that relate to more circumscribed domains, and we have developed paradigms for testing predictions from the various minitheories. (shrink)

Despite the millions of hours donated to charity each year by employees on behalf of their employers there has been relatively little research into the motives for such pro-social behavior. The current paper extends Peterson’s (2004, Journal of Business Ethics 49, 371) study by exploring a unique form of employee volunteerism identified as intra-organizational, or employer-sanctioned volunteerism, and uniting the heretofore distinct charity support and organizational citizenship behavior literatures. Results of a preliminary study revealed that employee participation in such intra-organizational (...) volunteer programs is motivated by charity, firm, and personal benefits. Managerial and research implications are presented. (shrink)