Gоttmаn's cаscаde mоdel оf marital dissolution is based on four corrosive communicative processes that he calls "the Four Horsemen of the Apocalypse." This process starts with complaining and criticizing, followed by contempt, defensiveness, and _____:
1Accоrding tо the Americаn Assоciаtion for Single People (AASP), this nаtion's unmarried citizens are regularly subjected to discrimination. 2For one thing, says AASP, single people get a lot fewer employee benefits than married people get. 3Married people, for example, get hundreds or even thousands of dollars more in medical and dental benefits for their spouses and children. 4Single people, however, rarely receive comparable compensation. 5Furthermore, single people often pay higher taxes than married people do, especially when compared to a married couple with only one wage earner. 6And single people usually pay higher insurance rates than married people pay. 7In California, for example, an unemployed, 20-year-old married male driver who drinks pays less for his auto insurance than a 20-year-old single student who is a member of the honor society and does not drink pays for his. 8In addition, a landlord can discriminate against a single person by refusing to rent to him or her. 9If the unmarried person wants to fight this unfair treatment, his or her only recourse is to file a lawsuit and spend thousands of dollars in legal fees. (Source of information: Thomas F. Coleman, "The High Cost of Being Single in America," American Association for Single People,http://www.unmarriedamerica.org/cost-discrimination.htm)What is the topic of the reading?