This study examines how behavioral and attitudinal information shape impression formation and communication effectiveness. While prior findings have been mixed regarding which type of information exerts a stronger influence, the present research highlights that the impact may depend on the communicator’s perceived identity. A communicator’s identity can signal either behavioral tendencies (e.g., reflecting past actions) or attitudinal orientations (e.g., expressing evaluations or preferences). Correspondingly, behavioral information conveys what a communicator has done, whereas attitudinal information conveys what they feel or believe. We propose that when the communicator’s identity does not align with the accompanying behavioral or attitudinal information, the specific information provided exerts greater influence than the identity itself, suggesting that message content can override prior identity cues in shaping perceptions.