The rates of children diagnosed with autism spectrum disorder (ASD) have been rising dramatically over the last 20 years. The Center for Disease Control and Prevention ([CDC], 2018; based on surveillance data from 2014) estimates that 1 in every 59 children is now diagnosed with ASD (Diagnostic and Statistical Manual – Fifth Edition [DSM-V], 2013). With more and more children receiving a diagnosis of ASD, the prevalence of children with ASD who are transitioning into adulthood is on the rise. Estimates from the last ~ five years suggest that about 50,000 persons with ASD are turning 18 every year (Shattuck, Narendorf, Cooper, Sterzing, Wager & Taylor, 2012). Looking into the future, the U.S.