A developmental task is one that arises predictably and consistently at or about a certain period in the life of the individual. He believed that learning is basic to life and that people continue to learn throughout life. According to him, a developmental task is a task that an individual has to and wants to solve in a particular life period. He writes, “A developmental task is a midway between an individual need and a social demand. Social expectations: According to the Expectation states theory, group members develop expectations about the future task performance of all group members, including themselves. Once developed, these expectations guide the group interaction.