Anne Machung and I interviewed 145 people altogether, two-thirds of them several times over. We interviewed 100 husbands and wives (50 two – job couples) and 45 other people, including baby-sitters, day-care workers, schoolteachers, traditional couples with small children, and divorcdes who had been in two-job couples. I did the in-depth observations of 12 fami­lies, and these families were selected from among the 50 couples in our study as good examples of common patterns we found. We supplemented the in-depth study with a quantitative analysis of all 50 families.