M. Wanke et al., Next to a star: Paling, shining, or both? Turning interexemplar contrast into interexemplar assimilation, PERS SOC PS, 27(1), 2001, pp. 14-29
Four studies, set in the political and marketing domain, investigated how a
n extreme exemplar influences the evaluation of more moderate exemplars. In
Studies 1 to 3 an extremely positive exemplar (star) elicited contrast in
the evaluation of more moderate exemplars. However the contrast effect was
eliminated when the shared category membership of the star and the respecti
ve exemplar was made salient. Rather than relying on categorization, Study
4 manipulated interexemplar assimilation by using comparison processes to d
raw attention to the features shared with an extreme exemplar Whether the e
xtreme exemplar caused contrast or assimilation depended on the direction o
f comparison with which target and context stimulus were compared. All stud
ies, in particular Studies 3 and 4 suggest that interexemplar contrast and
interexemplar assimilation work in parallel rather than alternatively.