Discrepancies among family members' ratings on aspects of family functioning are challenging both, methodological and interpretational. Family members' perspectives and their discrepancies are indicators of family functioning, affecting adolescents' psychological development. Previous research focused on linear effects, ignoring that rather extreme than the small differences in ratings might be associated with higher levels of problem behaviors, indicating a negative development. Based on 947 German mother-adolescent-dyads, this study examined how level and discrepant parenting ratings on parental warmth relate to early adolescents' problem behaviors (3rd-6th), using LCSMs to assess the level as well as linear and quadratic discrepancy effects. This study showed that before secondary school-transition, high mother-adolescent levels in parental warmth negatively predicted emotional and social problems. After the transition, very high levels of discrepancies positively predicted problem behaviors, when modelled as quadratic effects. The study not only highlights the consideration of multiple perspectives but also the type of modeling.