Participation in interviews has the potential to change beliefs about dating relationships. Changes in beliefs should vary as a function of how much participants think and talk about their relationships. Participants (N= 464) were randomly selected for an interview study from households in a large Southwestern U.S. city. Participation should have positive effects on beliefs when thinking or talking is high and negative effects when thinking or talking is low. As predicted, talking moderates the association between participation and conflict, and thinking moderates the effects of participation on satisfaction and friendship-based love. Results differed for men and women. Under conditions of low talk and high thinking, participation has negative effects. Implications of the effects of participation are discussed.