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Assessments of others differ from self-assessments because respondents
typically have less information about others. Just as when for asked
for a self-assessment about a behavior that is not easily retrieved
from memory, the respondent typically follows an estimation strategy
that leads to differing responses. Although vignettes describe
someone other than the respondent, all the information necessary to
evaluate this other person is in the vignette. By the ``maxim of
manner'' (Clark and Schober, 1992: 27) the respondent will indeed
assume that the researcher has provided all the necessary information,
and the respondent need not resore to an estimation strategy.
Gary King
2006-01-03