Two studies demonstrated that individuals can fail to detect changes in their actions that are induced by implicit social influence. In both studies, observers’ impressions indicated that actors matched the positivity of their remarks about themselves to the positivity of another person’s self-description. However, actors’ own judgments of the types of impressions they conveyed revealed that they did not perceive the effect of the other’s self-description on their self-presentation. Study 1 suggested that actors’ relatively poor access to their own nonverbal behavior could not fully account for their failure to perceive how they were influenced. Study 2 indicated that actors’ metaperceptions were connected to actors’ general beliefs about themselves, whereas observers’ impressions were not. The “blindness” effect was driven primarily by actors low in self-esteem. Implications for self-presentation and other social phenomena are discussed.