Ethnic Enclave Effect Estimation

Ethnic enclave effect estimation measures the economic consequences of working within a co-ethnic enclave economy — a spatially concentrated cluster of immigrant-owned firms employing co-ethnic workers — rather than in the open secondary labor market. The framework was forged in the debate launched by Alejandro Portes and Leif Jensen's 1989 study of Miami's Cuban enclave before and after the Mariel boatlift, which asked whether enclave participation rewards immigrants and, crucially, whether it lets them convert their human capital into earnings the way the mainstream economy does. The central empirical object is the coefficient on an enclave-participation indicator in a log-earnings equation, together with the interaction between participation and human capital that reveals whether education and experience pay off inside the enclave. Because immigrants are not randomly sorted into the enclave, selection correction is essential, and how 'enclave' is defined — by residence, by ownership, or by employment in co-ethnic firms — sharply affects the conclusion. Portes and Zhou later folded the enclave into the broader theory of selective acculturation, where co-ethnic economies serve as a mobility ladder. The method remains the standard tool for testing whether ethnic economies trap or uplift their participants.