The existing literature on attitudes and social perception provides ample c
onfirmation of the impact of physical appearance on social judgment and eva
luation outcomes. The present article investigates the extent to which thes
e robust findings are moderated by stable individual differences in the ten
dency to rely on external stimulus qualities informing social impressions.
Study 1 introduces the Perceptual Reliance Index (PRI) and provides psychom
etric data on the measure. Study 2 shows that high PRI participants make si
gnificantly different social evaluations for targets of high versus low phy
sical attractiveness, whereas low PRI participants do not. Study 3 further
extends these findings by demonstrating that within-race variations in phen
otypic appearance (e.g., skin color, facial features) produce differential
priming effects for high but not low PRI participants. Such systematic bias
in social judgment on the basis of physical cues alone suggests the existe
nce of a purely perceptual-based form of prejudice.