Nine trait words — generous, helpful, friendly among them — describe how warmly a friend is expected to react upon learning they've been recommended for something. Because the items never specify what the referral is for, the same nine words work across very different referral contexts.
7-point unipolar Likert (1=strongly disagree, 7=strongly agree)
Gershon, R., Cryder, C., & John, L.K. (2020). Why Prosocial Referral Incentives Work: The Interplay of Reputational Benefits and Action Costs. Journal of Marketing Research, 57(1), 156–172.
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