“…The impact of women's income on marital outcomes has been studied intensively in the west, and the mainstream line of study supported the economic independence hypothesis (Parsons, 1949), i.e., wives' relative income (WRI) will lead to their marital dissatisfaction (Furdyna, Tucker, & James, 2008) and it is positively associated with the risk of divorce (Heckert, Nowak, & Snyder, 1998;Rogers & Deboer, 2001;Kalmijn, Loeve, & Manting, 2007). Equity theory argued that the negative impact of WRI on the wife's marital quality can be understood by her lowered perception of equity (Booth, Johnson, White, & Edwards, 1984;Schafer & Keith, 1981).…”