Measures Baseline survey. Dietary intake is difficult and time consuming to measure, and so in the interest of minimizing participant burden we decided to measure key single behaviors related to obesity for which there were existing measures. Following evidenced-based guidelines for health promotion and weight management, we assessed three nutrition behaviors: fruits and vegetables ("How many servings of fruits and vegetables do you eat each day?" with 12 responses ranging from 0 to 11 or more, which was prefaced with pictures representing portion sizes); soda ("How often do you drink soft drinks or soda pop (regular or diet)?" with 6 responses ranging from never to 2 or more times per day); mindless eating ("How often do you eat food (meals or snacks) while doing another activity, for example, watching TV, working at a computer, reading, driving, playing video games?" with 5 responses ranging from never to always). The same measurement difficulties exist for physical activity, and so investigators used the same strategy to select key single items that have been used before in research studies and compared well with longer measures. We assessed physical activity in the form of walking for leisure, transport, or exercise during the past week with the following question: "During the last 7 days, on how many days did you walk for at least 10 minutes at a time in your neighborhood?" with responses ranging from no walking for more than 10 minutes at a time or the option to fill in number of days per week and number of minutes per day. Number of days/week was multiplied by minutes/day to calculate minutes of walking per week. To assess walking on a typical day, we then asked: "On a typical day how many minutes do you walk in your neighborhood?" with the option to fill in minutes per day. Finally, the survey assistant measured the height and weight of both the mother and daughter using a scale. This was used to calculate body mass index (BMI, kg/m2). Both body weight and survey variables were planned to occur annually for the duration of the study.