In this study, it was proposed that the implications of individual‐systems fit vary across different settings and across indicators of personal functioning internal and external to the setting. These predictions were put to test with 144 members of four churches differing in their perceived openness to different points of view and change. It was assumed that members with greater tolerance for ambiguity fit better within more autonomous open churches (MAOC), while members with less tolerance for ambiguity fit better within less autonomous open churches (LAOC). Modest support was obtained for both predictions. Among the MAOC, greater tolerance for ambiguity related significantly to satisfaction with aspects of the church, more active problem‐solving skills, life satisfaction, and higher levels of self‐esteem and trust in others. Among the LAOC, less tolerance for ambiguity related significantly to greater satisfaction with several aspects of the church. However, slightly positive rather than negative relationships emerged between tolerance for ambiguity and trust and self‐esteem. This study suggests that the efficacy of fit needs to be examined critically across diverse settings through a wide range of indicators of individual functioning.