<p>Conversational argument scholarship has recently examined people’s personal and social interactions for their argumentative qualities. Relying on the theory of Minimally Rational Argument (MRA), this paper investigates the manner in which moods affect people’s conversational argument acts and sequences. Three moods related to social interaction were selected: depression, anger, and vigor. Thirty-five married couples completed measures of mood and then engaged in conversations regarding issues they had nominated. Over 5,400 argument turns were coded for their argumentative function. Results indicated that moods variously associated with various argument-relevant acts and sequences. These findings confirm a new MRA proposition that people’s moods influence their conversational argument behaviors. Implications for the field of conversational argument generally and research on how affect influences reason-giving specifically are discussed.</p>