RT Journal Article T1 When family social capital is too much of a good thing A1 Herrero, Inés A1 Hughes, Mathew K1 Social capital K1 Family social capital K1 Family firms K1 Networks K1 Family functioning K1 Boundary spanning K1 Curvilinear relationships K1 Firm performance AB Family social capital (FSC) is theoretically predicted to benefit family firm performance, but empirical results repeatedly disappoint this expectation. To bridge the disconnect between theory and empirical evidence, we conceptualize FSC as a multidimensional construct in which its dimensions exhibit a mix of positive and negative consequences resulting in a ‘too much of a good thing’ effect. At high levels, the structural, the structural dimension of FSC can cause the family firm to form a structured group and become trapped in its established networks, preventing new knowledge from entering the family firm. With a hand-collected dataset, we test a curvilinear relationship between the structural dimension of FSC and family firm financial performance, and linear effects from its relational and cognitive dimensions. We further examine whether possessing organizational social capital (OSC) mitigates the negative consequences of high FSC. We reveal that the form and combination of FSC matters more than its amount. We contribute to theory a co-dependent view of FSC and OSC (as two different social capitals) that appreciates their concurrent effects. PB Elsevier YR 2019 FD 2019-01-01 LK https://hdl.handle.net/10433/19716 UL https://hdl.handle.net/10433/19716 LA en NO Herrero, I., & Hughes, M. (2019). When family social capital is too much of a good thing. Journal of Family Business Strategy, 10(3), 100271. NO PRX14/00180 and ECO2016-75047-P NO Departamento de Organización de Empresas y mk-Grupo EFFAM DS RIO RD Apr 25, 2026