“…Although we are unaware of any studies that have established this in samples consisting entirely of young children, there are good reasons to do so. Disruptive behaviors are multiply determined in early childhood and, for some subset of children, likely represent transient difficulties associated with emerging self-regulatory and language abilities (Arnold, Kupersmidt, Voegler-Lee, & Marshall, 2012; Cohen & Mendez, 2009; Mathiesen & Sanson, 1999; Rose, Rose, & Feldman, 1989; Shaw, Lacourse, & Nagin, 2005). An open question is whether the co-occurrence of ODD (a developmentally appropriate indicator of conduct problems for young children) and CU behaviors in early childhood might identify that subset of children whose disruptive behaviors are less transient and more likely to persist into middle childhood.…”