The present study aimed to examine differences in a range of psychosocial variables and political tendencies across three groups, namely Iranian new-comers (who have lived in the UK for less than two years), bicultural Iranians (born and raised in the UK or raised in the UK since they were under 10 years old), and UK citizens (bicultural participants were excluded). The target variables measured in the present study consisted of empathy, Theory of Mind (ToM), flexibility, suggestibility, openness to experiences, normative identity style, interpersonal trust, pro-social behaviour, egalitarian sex role, authoritarianism and adherence to democracy. A series of MANOVAs revealed significant main group effects for most of variables. The results of post hoc and polynomial tests yield an incremental linear trend on empathy, theory of mind, interpersonal trust, openness, pro-social behaviour and adherence to democratic values for groups ordered as Iranian new comers, bicultural and British; a decreasing trend was also observed on normative identity style, suggestibility, and authoritarianism. Thse between-two cultures' findings of bicultural group might be explained by learning through political socialization. This provides support for the fact that being raised in a distinct cultural setting can have a vivid impact on people's psychological characteristics and socio-political tendency.