The authors postulate that the outcome of social comparison processes is de
termined by the role social comparison information serves during the self-e
valuation process. Assimilation is more likely in situations that instigate
the inclusion of social comparison information in self-representations. Co
ntrast is the more probable outcome when information about another person t
s used as a reference point for self-judgments. Whether comparison informat
ion instigates interpretation or comparison effects depends on the distinct
ness of this information as well as the perceived mutability of the self. T
he authors found support for their perspective using different types of man
ipulations of the distinctness construct, treating self-mutability as a con
textual as well as an individual-difference variable, and measuring the eff
ects of social comparisons on measures likely to reveal both assimilation a
nd contrast effects (self-evaluative judgments and behavioral predictions),
assimilation effects only (mood measures), and motivational self-repair ef
fects (importance ratings of the focal comparison dimension).