Behavioral science research shows that interpersonal relationships at work are usually less complex and looser. It may be because they are more regular, easier to predict, and easier to coordinate. Because people know that they work together every day, Cooperate with each other to complete a certain job. This passage is mainly to emphasize:. ['Lack of regular interpersonal relationships.', 'The relationship between staff is relatively simple.', 'Common goals unite staff.', 'Maintaining good interpersonal relationships requires joint efforts.']