White participants show reliably slower reaction times on incongruent racial categorizations.

Evidence

White participants had significantly longer log-latencies when categorizing names and adjectives in the incongruent condition (M = 6.94, SD = 0.20) than in the congruent condition (M = 6.58, SD = 0.16), F(1, 109) = 329.73, p < .0001, which replicated the race-IAT effect (Greenwald et al., 1998). — Wade C. Rowatt and Lewis M. Franklin, Christian Orthodoxy, Religious…, 55