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Unformatted text preview: also the likelihood that the participant would respond
similarly if asked again to respond to the same dilemmas. Willingnessto-help scores ranged from 1 (i.e., target not reported as more likely to
be aided and participant deﬁnitely certain of the decision) to 8 (i.e.,
target reported as more likely to be aided and participant deﬁnitely
certain of the decision). Because each target was paired with four family members, each target had four willingness-to-help scores.
We needed a single willingness-to-help score for each target so we
could examine the effects of target-related attributes (i.e., genetic relatedness, emotional closeness, age) on participants’ judgments of
willingness to act altruistically. To compute this score, we used the
formula 0.8(M – 4.5), where M is the mean of the target’s four willingness-to-help scores. Subtracting 4.5 centered the scores, and multiplication by 0.8 adjusted for the paired-comparison feature of the design.
These composite scores are the willingness-to-help scores used in all
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- Fall '13