This study aimed to assess the congruencies and discrepancies between mindset domains in relation to well-being and sought to demonstrate that mindset falls into the characteristic adaptation level of personality. Data (N = 618, Mage = 16.07, SDage = 0.99) from Wave 1 of a longitudinal study on primarily ethnic-minority adolescents were used in response surface analyses to examine the effects of (in)congruence on well-being. The response surface analyses suggested no overall congruence effect between moral and ability mindsets. However, two-thirds of the participants demonstrated differing levels of mindsets, highlighting the domain specificity of mindsets. Results suggest that mindsets are contextual, domain-specific constructs, suiting the characteristic adaptation level of personality. Congruence for moral and ability mindset does not affect adolescent well-being.

Programs effective in promoting positive youth development (PYD) involve curricular features termed the Big Three: Positive and sustained adult–youth relationships; life-skill-building activities; and youth contribution and leadership opportunities. Data from 610 adolescents (50% female; M age = 16.39 years, SD = 1.83) enrolled in Compassion International-supported programs in El Salvador indicated that scores derived from a youth-report measure of the Big Three, established using data from Rwanda, manifested strong invariance and predicted both youth strengths and contribution. Qualitative interviews with 18 youth from these programs indicated that the Big Three were seen as present and enhancing their positive development. We discuss how future research using a quantitative–qualitative approach may provide deeper evidence about the practical application and promotion of PYD in youth programs.