Date Presented 3/31/2017 The purpose of this study was to examine internal consistency, factor structure, and test–retest reliability of the Sensory Environment and Participation Questionnaire (SEP–Q) in children with ASD. The SEP–Q measures parents’ perspective of the impact of the sensory environment on participation. Primary Author and Speaker: Beth Pfeiffer Additional Authors and Speakers: Wendy Coster, Katherine Bevans Contributing Authors: Cheenghee Kho