In a study conducted by Craighead, Smucker, Craighead, & Ilardi (1998) published in Psychological Assessment, a factor analysis of the Children’s Depression Inventory (CDI; Kovacs, 1992) was conducted with a large nonclinical, community sample of 1,777 pre-adolescents and 924 adolescents. The data yielded the following five first-order factors: externalizing, dysphoria, self-deprecation, school problems, and social problems for the pre-adolescent group. The adolescent group yielded the same five factors plus a sixth factor (biological dysregulation). A confirmatory factor analysis supported the stability and replicability of the obtained factor structures. Both of these sample groups produced two higher order factors: internalizing and externalizing. In addition, more pre-adolescent boys reported higher depression scores on the total CDI (17 and above), while more adolescent girls reported higher CDI scores (17 and above) as well as relatively higher scores on the biological dysregulation factor.