The present study investigated whether satisfaction and frustration of the psychological needs for autonomy, relatedness, and competence, as identified within Basic Psychological Need Theory (BPNT; Deci and Ryan, Psychol Inquiry 11:227-268, 2000; Ryan and Deci, Psychol Inquiry 11:319-338, 2000), contributes to participants' well-being and ill-being, regardless of their cultural background and interpersonal differences in need strength, as indexed by either need valuation (i.e., the stated importance of the need to the person) or need desire (i.e., the desire to get a need met). In Study 1, involving late adolescents from Belgium and China (total N = 685; Mean age = 17 years), autonomy and competence satisfaction had unique associations with well-being and individual differences in need valuation did not moderate these associations. Study 2 involved participants from four culturally diverse nations (Belgium, China, USA, and Peru; total N = 1,051; Mean age = 20 years). Results provided evidence for the measurement equivalence of an adapted scale tapping into both need satisfaction and need frustration. Satisfaction of each of the three needs was found to contribute uniquely to the prediction of well-being, whereas frustration of each of the three needs contributed uniquely to the prediction of ill-being. Consistent with Study 1, the effects of need satisfaction and need frustration were found to be equivalent across the four countries and were not moderated by individual differences in the desire for need satisfaction. These findings underscore BPNT's universality claim, which states that the satisfaction of basic needs for autonomy, relatedness, and competence represent essential nutrients for optimal functioning across cultures and across individual differences in need strength

This study examined the unique relations between multiple sources (i.e., mothers, teachers, and siblings) of perceived daily autonomy support and psychological control and children's basic psychological needs and well-being. During 5 consecutive days, 2 children from 154 families (Mage youngest child = 8.54 years; SD = .89 and Mage oldest child = 10.38 years; SD = .87) provided daily ratings of the study variables. Multilevel analyses showed that each of the sources of perceived autonomy support and psychological control related uniquely to changes in daily well-being and ill-being. These associations were mediated by experienced psychological need satisfaction and frustration, respectively. Overall, the findings testify to the dynamic role of autonomy support and psychological control in children's development. Implications for future research are discussed. (PsycINFO Database Record

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Although abundant research has shown that self-critical perfectionism relates to binge eating symptoms, fewer studies have addressed the role of intervening processes that might explain why this is the case. Grounded in self-determination theory, we hypothesized that self-critical perfectionism would relate to an increased risk for binge eating symptoms because it engenders frustration of the psychological needs for autonomy, competence, and relatedness. This hypothesis was tested in a sample of 566 adolescents (72% female; mean age = 13.3 years) using a 3-wave longitudinal study with a 6-month interval. Structural equation modeling analyses showed that self-critical perfectionism related to increases in psychological need frustration which, in turn, predicted increases in binge eating symptoms. Structural relations were found to be equivalent for males and females. Theoretical and clinical implications of these findings are discussed.

Across the world, measures were taken to contain the spreading of the COVID-19 virus. Many of these measures caused a sudden rupture in people’s daily routines, thereby eliciting considerable uncertainty and potentially also hampering the satisfaction of individuals’ psychological needs for autonomy, relatedness, and competence. Drawing upon Maslow’s Hierarchical Need Theory and Self-Determination Theory, this study examined the unique role of felt insecurity and the psychological needs, as well as their dynamic interplay, in the prediction of mental health. A large and heterogeneous sample of adults ( N = 5118; M age = 43.45 years) was collected during the first ten days of the lockdown period in Flanders, Belgium. A subsample ( N = 835 , M age = 41.39) participated during a second wave one week later. Hierarchical regression analyses indicated that felt insecurity, need satisfaction and need frustration all independently predicted various positive (life satisfaction, sleep quality) and negative indicators depressive symptoms, anxiety) of mental health, with little systematic evidence for interactions between the predictors. The pattern of findings obtained concurrently largely held in the longitudinal analyses. Finally, results showed that associations between felt insecurity and lower concurrent and prospective mental health were partially mediated by need satisfaction and frustration, with especially psychological need frustration predicting changes in mental health over time. Overall, the findings suggest that satisfaction of the psychological needs for autonomy, competence, and relatedness is not just a ‘luxury good’. Satisfaction of these needs is important also in times of insecurity, while need frustration represents a risk factor for maladjustment during such times.