“…Some studies provide evidence that nonverbal IQ represents an important independent predictor of children’s behavioral symptoms (Benasich et al, 1993; Elbro et al, 2011; Gualtieri et al, 1983; Law et al, 2009; Silva, Justin, McGee, & Williams, 1984). Other investigations reported that nonverbal IQ was not a significant contributor (Botting & Conti-Ramsden, 2000; St. Clair et al, 2011; Tirosh & Cohen, 1998; Wadman, Botting, Durkin, & Conti-Ramsden, 2011). Other factors besides nonverbal IQ introduce confounds.…”