According to the Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5), an intellectual disability (formerly known as mental retardation) is a lifelong disorder with deficits in both intellectual functioning and adaptive behaviors that is first noted during the developmental period (Hartley & MacLean, 2009). Deficits in intellectual disability functioning includes a person’s ability to reason, problem solve, make plans, think abstractly, and learn from experience (Hartley & MacLean, 2009). People with intellectual disabilities make up a small but significant portion of the population. There are an estimated 3.24 million Americans with intellectual disabilities (Olsson & Hwang, 2001). Among those diagnosed with intellectual
