Abstract
Discourse markers help people navigate conversations. We tested how the use of five discourse markers - so, but, oh, I think, and like - was influenced by communication medium (text, phone, videoconferencing) and conversation type (task-related conversation or small talk). Additionally, we tested whether these discourse markers influenced the amount of words contributed throughout the conversation and how interlocutors felt about their conversations. These discourse markers were used more while working on a task compared to casual chat during a phone conversation, but less while working on a task compared to casual chat during instant messaging and videoconferencing conversations. We observed no relationships between discourse marker use and the amount participants contributed to their conversations, nor did we observe relationships between discourse marker use and conversational appraisals in the phone or videoconferencing conversations. We observed a trending relationship in instant messaging conversations where the more discourse markers used, the more communicators enjoyed their conversations. The work presented here expands understanding of discourse markers by documenting variation by setting and task type. The findings support the argument that discourse markers are used to negotiate conversations.