The effects of intellectual functioning and autism severity on outcome of early behavioral intervention for children with autism

Change in autism core symptoms with intervention

“…ED intervention involves multiple transitions per day from one activity or therapy to another which results in significant variation in the way intervention is provided. In ABA, teaching is more consistent, both in the methods used and in theHowever, only Ben-Itzchak and Zachor (2006) examine the correlation between pre-intervention cognitive ability and controlled intervention outcome. The researchers report that high IQ predicts better achievements only in receptive language skills but not in other investigated developmental domains after 1 year of intervention.…”

Evidence-Based Comprehensive Treatments for Early Autism

“…Articles by Harris and Handleman (2000) and Ben-Itzchak and Zachor (2006) have replicated the predictive power of initial IQ in terms of better outcomes. A second predictor of better outcomes may involve age at entry.…”

Educational Interventions for Young Children with Autism Spectrum Disorders

“…Since the Eikeseth (2009) review, several additional outcome studies have been published; one has reached Level 2 scientific merit (Grindle et al 2012) and five studies have reached Level 3 scientific merit (Ben-Itzchak and Zachor 2007;Eldevik et al 2012;Hayward et al 2009;Peters-Scheffer et al 2010;Perry et al 2008). These studies report results similar to the ones reviewed in Eikeseth (2009).…”