Revitalization through self-regulation: The effects of autonomous and controlled motivation on happiness and vitality

Three studies examined the effects of experimentally induced motivational o rientations on the subtly different positive affects of vitality and happin ess. We hypothesized, based on self-determination theory Deci & Ryan, 1991; Ryan & Frederick, 1997), that doing well when autonomously motivated would enhance subjective vitality relative to doing well when controlled in one' s motivation, but that doing well under the two motivational states would n ot have differential effects on happiness. Two experiments in which motivat ion was induced by instructions to participants about task engagement and a third experiment using an attributional methodology yielded the hypothesiz ed pattern of effects. Results are discussed in terms of the importance of differentiating positive outcomes in terms of their underlying motives and of giving increased attention to understanding restorative environments. (C ) 1999 Academic Press.