A long-standing and widely accepted hypothesis in the literature on race relations is that the relative size of the black population is negatively related to white support for racial integration and positively related to discrimina-tion and racial inequality (Hawley, 1944; R. Williams, 1947; Allport, 1954; Pettigrew, 1957: 683; Blalock, 1967). Wilcox and Roof (1978) sunmarized the assumptions underlying this hypothesis as follows:(1) integration poses an objective threat to white social, political, and economic status;(2) the magnitude of the threat to white status increases with the relative size of the black population;(3) white perceptions of status threat increase with black concentration;(4) white support for integration decreases as the threat to white status increases; and (5) discrimination and racial status inequality increase as white support for integration diminishes. Much of the evidence supporting this model comes from community-level studies reporting positive correlations between percent black and racial in-