FEW tasks in developing countries are as tricky—or as important—as convincing parents to keep their daughters in school longer. One way of doing so is to make contraceptives available, concludes a new working paper by Kimberly Singer Babiarz at Stanford University and four other researchers.
Conducted in Malaysia, the study used a happy coincidence of surveys going back decades and family-planning programmes rolled out in a way that made it possible to measure their effect. Starting in the 1960s, these programmes were introduced in some areas a few years earlier than in others. So researchers could compare what happened to girls in areas where contraceptives became available when they were very young with girls from the same cohorts in areas with no contraceptives.
The girls in places with contraceptives stayed in school six months longer, or about a year longer if they were born after the programmes began. Similar effects…