TABLE 3

Internal Reliability: Cronbach’s α and McDonald’s ω Coefficients (99.95% Confidence Intervals) at Age 3, 5, and 7 Time Points

Age 3Age 5Age 7
Conduct problems
n13 22514 00712 854
 α0.800 (0.790–0.810)0.772 (0.753–0.790)0.823 (0.809–0.836)
 ω0.808 (0.799–0.818)0.777 (0.760–0.794)0.830 (0.817–0.843)
Hyperactivity
n12 36913 52612 651
 α0.786 (0.776–0.797)0.845 (0.838–0.853)0.858 (0.851–0.865)
 ω0.826 (0.818–0.834)0.864 (0.858–0.870)0.880 (0.875–0.886)
Emotional problems
n12 36913 52612 651
 α0.746 (0.727–0.765)0.777 (0.763–0.790)0.794 (0.783–0.806)
 ω0.754 (0.734–0.774)0.785 (0.771–0.798)0.806 (0.793–0.817)
Peer problems
n11 68512 61111 817
 α0.628 (0.605–0.650)0.712 (0.692–0.732)0.758 (0.742–0.775)
 ω0.658 (0.639–0.678)0.722 (0.703–0.741)0.767 (0.751–0.783)
Prosocial
n12 52714 04212 997
 α0.766 (0.754–0.778)0.808 (0.798–0.819)0.840 (0.831–0.850)
 ω0.770 (0.759–0.782)0.811 (0.801–0.821)0.843 (0.834–0.853)