“…Factor analyses, which were in many cases confirmatory, verified a two-, three-, or four-factor structure of childhood DB (Burns, Boe, Walsh, Sommers-Flanagan, & Teegarden, 2001; Burns, Walsh, Owen, & Snell, 1997; Burns, Walsh, Patterson, et al, 1997; Pelham, Evans, Gnagy, & Greenslade, 1992; Pelham, Gnagy, Greenslade, & Milich, 1992; Pillow, Pelham, Hoza, Molina, & Stultz, 1998). For studies that did not examine conduct disorder, two or three factors were found: ADHD and ODD or ADHD inattention, ADHD hyperactivity–impulsivity, and ODD (Burns et al, 2001; Pelham, Gnagy, et al, 1992). …”