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Abstract Mandatory sponsorship disclosure has reduced the value of influencer campaigns, as consumers are astutely aware of their promotional nature. At the same time, influencers are mobilizing as activists for prosocial causes. Against this backdrop, we ask: Do activism statements within sponsored influencer posts increase their effectiveness ? and if so “ why ” and “ when ”? Through one behavioral pilot study and four experiments, we reveal that activism statements in sponsored influencer posts prompt consumers to spend more time browsing the promoted product website and increase their purchase intentions. These effects are explained by a reduction in the activation of persuasion knowledge (i.e., reduced perceived selling intent). We further show that the positive effect of combining activism with product promotion is attenuated by the consumer's high level of cynicism. Moreover, influencer‐cause congruence boosts the positive effects of sponsored activism posts; however, incongruence causes these posts to backfire by raising perceived manipulative and selling intent. By intersecting two common phenomena in influencer posts (sponsorship disclosure and prosocial activism), we extend knowledge of the antecedents of sponsored influencer posts’ success and offer strategies for marketers to harness them.
Gao et al. (Sun,) studied this question.