“…The majority of studies on social integration have focused on ethnic intermarriages (Fu, 2001;Hwang et al, 1997;Kalmijn, 1998;Kalmijn and van Tubergen, 2006;Kulczycki and Lobo, 2002;Lievens, 1998;Qian et al, 2001;Rosenfeld, 2002;Van Tubergen and Maas, 2007). The remaining work in this field has examined weaker ties between ethnic groups, such as friendships or casual contacts (Dagevos et al, 2005;Emerson et al, 2002;Fong and Isajiw, 2000;Fong and Ooka, 2006;Quillian and Campbell, 2003;Sigelman et al, 1996;Weijters and Scheepers, 2003).…”