Ethnic diversity and generalized trust testing the contact hypothesis in Dutch voluntary organizations

This study reflects upon differences in generalized trust levels among active participants of voluntary organizations with varying levels of ethnic diversity. Based on the Family Survey of the Dutch Population 2009, we find that (a) average trust levels are highest among participants of ethnically diverse organizations; (b) On average, length of participation is unrelated to trust, and (c) ethnic diversity does not positively moderate this relationship; (d) Level of trust is considerably higher among recent joiners (0-2 years) of highly-diverse organizations (26%+ minority membership), than among recent joiners of (more) homogeneous organizations, strongly implying that those with higher trust select into diverse organizations. However, (e) we see a substantially lower level of trust among members of highly-diverse organizations (26%+ minority) when comparing mid-term duration of participation (3-10 years) with short-term duration of participation (0-2 years) and again a higher level of trust when participation duration is 11 years or more. Trust scores, thus, converge across different diversity levels at longer duration of participation.