Collaborative problem solving based on different perspectives is an effective strategy for constructing new knowledge and discoveries. It remains unclear what kind of interaction process underlies development of an abstract or integrated perspective upon experiencing conflict with different perspectives in a group. The present study investigates two factors in an experimental setting: (1) groups with a single opposing perspective (maverick) would hold an advantage over groups and (2) groups with positive moods would hold an advantage over groups with negativity. We investigate the factors influencing perspective taking in problem-solving groups using conversational agents. Results showed that (1) a single different perspective in the group can be accepted for perspective taking compared to several members with an opposing perspective, and (2) positive mood generated by group members facilitating perspective taking compared to negative mood.