Autism spectrum disorders : a handbook for parents and professionals. 1). 978–0–313–34634–7 (vol. 2). First published in 2007. Praeger Publishers, 88 ...... Atypical behavior refers to any behavior or combination of behaviors found to be.
http://www.autismarabia.com/wp-content/uploads/2013/07/Autism-Spectrum-Disorders-Handbook-for-Parents-and-Professionals.pdf