“…Individuals with MDD represent the severe end of that spectrum, but examining trajectories of depression in the entire population will likely result in a more accurate representation of the true underlying continuum of the disorder. From a public health standpoint, subclinical depressive symptoms are relevant both because they predict future clinical illness (Horwath, Johnson, Klerman, & Weissman, 1994; Laborde-Lahoz et al, 2015; Pietrzak et al, 2013) and because they themselves are associated with significant morbidity (Chachamovich, Fleck, Laidlaw, & Power, 2008; Kang, Eno Louden, Ricks, & Jones, 2015) and negative outcomes (Allen, Chango, Szwedo, & Schad, 2014; Grabovich, Lu, Tang, Tu, & Lyness, 2010). In addition, studies of depressive symptom trajectories in general population samples of children and adolescents can speak to the role of depressive symptoms in normal child/adolescent development, something that studies restricted to patient samples would be unable to do.…”