(Unit5TextB 课文段落) It ’ s true this may help reduce exposure to the temptation of market materialism. Yet, the programs themselves are often the reasons. One study found that the cost of the lifestyles represented in the most popular TV situation comedies are well beyond what the average American can afford. We see these lifestyles and, over time, expect them. Another study found that the more a person watches television, the more money they spend. This was in spite of the participants ’ beliefs that they weren ’ t affected by commercials. 题目: What is the meaning of “ situation comedies ” ?