Abstract: | While there is evidence from the self‐determination perspective for the mediation of basic needs satisfaction in the materialism–well‐being link, no research to date has attempted to examine the relative contribution of the three needs to the mediating effect. Given that the predictive value of psychological needs on well‐being depends upon the match between the need and life domains, in two studies we investigate the differential mediating role of all three needs in the negative relationship between materialism and well‐being. In study 1, 231 adult participants self‐reported their materialistic attitudes, basic needs satisfaction and well‐being. In study 2 (N = 82 undergraduates), we experimentally activated materialistic thoughts and examined their effects on need satisfaction and state well‐being as compared to a neutral control condition. Study 1 furnished cross‐sectional evidence that materialism diminishes well‐being through lower satisfaction of the psychological need for autonomy only. Study 2 showed that experimental activation of materialism via short‐term exposure to pictorial consumer‐cues leads to lower satisfaction of the need for autonomy, which in turn produces higher negative affect among participants. The findings point towards the importance of considering the specific role of the psychological need for autonomy in the materialism–well‐being link. |