Adele F. Dimian 1 , Kelly N. Botteron 2 , Stephen R. Dager 3 , Jed T. Elison 4 , Annette M. Estes 5 , John R. Pruett Jr. 2 , Robert T. Schultz 6 , Lonnie Zwaigenbaum 7 , Joseph Piven 8 , Jason J. Wolff , 1 , The IBIS Network
20 February 2017
Prevalence of self-injurious behavior (SIB) is as high as 50% among children with autism spectrum disorder (ASD). Identification of risk factors for the development of SIB is critical to early intervention and prevention. However, there is little empirical research utilizing a prospective design to identify early risk factors for SIB. The purpose of this study was to evaluate behavioral characteristics predicting SIB at age 2 years among 235 infants at high familial risk for ASD. Logistic regression results indicated that presence of SIB or proto-SIB and lower developmental functioning at age 12 months significantly predicted SIB at 24 months. A pattern of persistent SIB over this period was associated with a diagnosis of autism and poorer cognitive and adaptive outcomes.