“…Based on Cicirelli's work (), we expected more sibling power imbalance in more collectivistic (i.e., Turkish, Indian, and ethnic Moroccan; The Hofstede Centre, ) samples than in more individualistic (i.e., Dutch; The Hofstede Centre, ) samples. Additionally, based on earlier studies on sibling warmth and conflict (Buist et al., , ), we did not expect differences between more collectivistic (i.e., Turkish, Indian, and ethnic Moroccan) and more individualistic (i.e., Dutch) samples concerning the effect of sibling power imbalance on internalizing and externalizing problem behavior.…”