A key debate in the interface literature is whether to make each modality as human-like as possible or instead to match the level of humanness of each modality. A three-condition experiment (recorded speech with synthesized face; synthesized speech with a synthesized face; or recorded speech with no face) was conducted (N = 36). When the modalities were matched, individuals exhibited significantly greater impression management and willingness to disclose personal information and felt more comfortable using the interface.