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We examined how merely sharing attitudes with a good listener shapes speakers’ attitudes. We predicted that high-quality (i.e., empathic, attentive, and nonjudgmental) listening reduces speakers’ social anxiety and leads them to delve deeper into their attitude-relevant knowledge (greater self-awareness). This, subsequently, differentially affects two components of speaker’s attitude certainty by increasing attitude clarity, but not attitude correctness. In addition, we predicted that this increased clarity is followed by increased attitude-expression intentions, but not attitude-persuasion intentions. We obtained consistent support for our hypotheses across five experiments (including one preregistered study), manipulating listening behavior in a variety of ways. This is the first evidence that an interpersonal variable, unrelated to the attitude itself, can affect attitude clarity and its consequences.