de Groot, J.I.M. & Steg, L. (2010). Relationships between value orientations, self-determined motivational types and pro-environmental behavioural intentions. J. of Environmental Psychology 30 (4) 368-378.
We examined the predictive power of egoistic, altruistic and biospheric valueorientations and six types of self-determined motivations (i.e. intrinsic motivation, integrated regulation, identified regulation, introjected regulation, external regulation, and amotivation) toward acting pro-environmentally for explaining two types of pro-environmentalintentions in two questionnaire studies among student samples (N = 304 and N = 520). The two pro-environmental intentional measures included choosing a car based on environmental performance and donating to an environmental organisation. Values were more predictive of pro-environmentalintentions than were self-determinedmotivationaltypes, although these differences were not always statistically significant. Furthermore, we explored how valueorientations are related to self-determinedmotivationaltypes. The more respondents were altruistically and biospherically oriented, the more they were self-determined to act pro-environmentally. When respondents endorsed egoistic values, they were less self-determined towards acting in a pro-environmental way. When altruistic and especially biospheric values were important predictors of pro-environmentalintentions, stronger types of self-determined motivations were also important to explain intentions. And, when egoistic values contributed uniquely to the explanation of pro-environmentalintentions, amotivation and external regulation (i.e. less self-determinedmotivationaltypes) were most relevant for explaining intentions.
De Groot, J.I.M
; Steg, L
(2010). Relationships between value orientations, self-determined motivational types and pro-environmental behavioural intentions. Journal of Environmental Psychology
30 (4), 368-378.
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