In secondary analyses we parsed out the effects of stressful life events at an earlier and later time period. Interaction effects were calculated separately for cumulative stressful life events experienced from 6 months to 3 ½ years (from questionnaires at 1 ½, 2 ½ and 3 ½ years) and from stressful life events experienced from 5 to 7 years from the questionnaire at 7 years.
