In 1975, stay-at-home mothers spent an average of about eleven hours per week on primary child care (defined as routine caregiving and activities that foster a child's well-being, such as reading and fully focused play). Mothers employed outside the home in 1975 spent six hours doing these activities. Today, stay-at-home mothers spend about seventeen hours per week on primary child care, on average, while mothers who work outside the home spend about eleven hours. This means that an employed mother today spends about the same amount of time on primary child care activities as a nonemployed mother did in 1975