The term paralinguistics (from ‘alongside language’ in ancient Greek) describes sounds that carry meaning, but that are not part of the language system. Such sounds convey information to other speakers, but they are not always clear, leaving one with a sense of ‘it wasn’t what they said, but how they said it.’ To interpret the speaker’s tone, participants often rely on the context of the interaction. This chapter explores research on paralinguistic features in four categories: voice quality, prosody, conversational management, and accent. The discussion includes how affect is expressed in electronic communication. Afterwards, these concepts are connected to an intercultural communication-oriented pedagogy, with sample language teaching activities.