Which of the following are group maintenance roles that help foster group unity?

The role of a harmonizer is crucial in fostering group unity because it emphasizes creating a positive atmosphere and encouraging collaboration among group members. The harmonizer works to smooth over conflicts and ensure that everyone's voice is heard, which helps to maintain a supportive and inclusive environment. This role involves mediating disputes, encouraging open communication, and promoting a sense of belonging within the group, all of which contribute significantly to collective cohesion and morale.

In group dynamics, while roles such as facilitator, decision-maker, and critical thinker are important, they do not focus as directly on the emotional and relational aspects that contribute to maintaining harmony and unity among members. The facilitator primarily manages discussions and logistics, the decision-maker focuses on the outcomes of group deliberations, and the critical thinker is concerned with analyzing ideas and solutions. These roles support the structure and process of group functioning but may not actively cultivate interpersonal relationships in the same way that the harmonizer does.