Final answer:
According to Yalom, all stated benefits of cohesive groups except for the premature ending of the group's work are valid. Cohesive groups encourage attendance, help members confront their emotions, and enhance interpersonal learning, but they do not necessarily lead to the group finishing its tasks sooner.
Step-by-step explanation:
All of the following, according to Yalom (2005b), are stated benefits of cohesive groups EXCEPT that they allow the group to finish its work and end sooner. Cohesive groups are known to have benefits such as higher rates of attendance, members feeling freer to deal with anger, and fostering a higher degree of interpersonal learning. However, the idea that cohesive groups allow the group to complete its work and end sooner is not listed as a benefit by Yalom. Instead, cohesive groups may take the time they need to ensure that all members have fully contributed and achieved the group's objectives.
Cohesive groups often experience a variety of other benefits, such as providing a social network for members to compare themselves to others, giving and receiving emotional support, and allowing individuals to challenge their beliefs and prejudices. Additionally, cohesive groups can positively impact ethnic communities by offering mutual support in various forms, which can be more readily accessible when people from a common background live close to one another.