Lizing and internalizing behaviors, both within and across time. Extensive data give evidence of the co-occurrence of problems across these two broad symptom dimensions (Angold, Costello, Erkanli, 1999; Bates, 1990; Caron Rutter, 1991; Caspi et al., 1995; Kagan, Snidman, Arcus, 1995). Rose, Rose, and Feldman (1989) examined behavior problems in children age 2 to 5 years using preschool and s