Due to the elevated exposure to individualistic cultural values through the use of social media, individuals living in collectivist cultures, particularly younger generations, are becoming increasingly ambivalent towards traditional values. This means that they may experience a phenomenon called collectivistic ambivalence, which can be described as the degree of internal conflict one experiences between her/his individual preferences and collectivistic values and norms. However, there is a lack of empirically-based measure of this phenomenon and, therefore, in Study 1, we first develop and validate a 10-item Collectivistic Ambivalence Scale (CAS) on a total of 856 college students. After this, in Study 2, conducted with an additional sample of 241 college students, we confirm that there is a significant positive correlation between collectivistic ambivalence and social anxiety, with inferiority feelings fully mediating this relationship. This suggests that collectivistic ambivalence is associated with a significant increase in social anxiety, as a result of its relationship with inferiority feelings. Moreover, inferiority feelings and collec-tivistic ambivalence significantly explain 31 % of the total variance in social anxiety.