The majority of the sample falls into the Stable Low trajectory, consistent with previous reports that a minority of children experience internalizing symptoms (Smucker et al., 1986). Among children who do experience problems, there is prior evidence of trajectories similar to those identified in the current study (Fanti and Henrich, 2010; Marmorstein et al., 2010a; McCarty et al., 2012; Wanner et al., 2012). Results vary across studies, possibly as a function of sample size and measurement instrument, but overall are broadly consistent with regards to trajectory shapes and interpretation.
