Cross sectional study.

Background/Objective: Recent interventions aim to heighten informal caregivers' empathy levels assuming that this will lead to better well-being. However, previous studies have explored linear associations between empathy and aspects of well-being and yielded mixed results. We hypothesized that quadratic models may be more fitting to describe these relationships. Method: A cross-sectional study, with two groups (201 informal caregivers, and 187 non-caregivers) was conducted.