A family adversity questionnaire was completed by mothers at three time points: during pregnancy and when their child was 0 – 1 year and 2 – 3 years old. Response rates ranged over time from 92% to 78%. Mothers completed questionnaires about their children's behavior at ages 4 and 7 years and exposure to stress at: 1 ½, 2 ½, 3 ½ and 7 years. Response rates ranged from 85% at 1 ½ years to 74% at 7 years.
