“…While some studies find immigrant population size to have a significant impact (Quillian, 1995;Semyonov et al, 2006), others give no or limited support to the idea that large immigrant populations raise the levels of negative attitudes (Hjerm, 2007;Sides and Citrin, 2007). In fact, other studies show that a large share of immigrants, in combination with close intergroup contacts, may facilitate tolerance and solidarity rather than raise feelings of threat (Pettigrew, 1998;Schlueter and Wagner, 2008;Wagner et al, 2006). Conversely, a small immigrant population can be perceived as highly threatening if they are believed to somehow violate laws and basic principles of society, damage the culture, or challenge the livelihood of the majority population (Triandafyllidou, 1998).…”