Bonacich's theoretical synthesis includes two propositions which assert that ethnic economy participants are more likely than other co-ethnics to be (1) attached to the in-group and (2) ambivalent toward the host society. Using data collected in a sample of Cuban exiles in Puerto Rico, this paper tests the propositions as well as an extension of them. Although the data do not support Bonacich's propositions in their original form, results uphold the extension. The implications of these findings are discussed.