Misunderstanding #1: Adults with ASD Are Unemotional
Adults on the spectrum DO experience emotions. However, the emotions felt by some of them may be less complex than the emotions of typical people.
Misunderstanding #2: Adults with ASD Hate To Be Touched
While it is true that some adults with the disorder may not enjoy physical contact at times, the issue here is not social, but sensory. Many of them have sensory integration issues (i.e., their interpretation of sensory input is abnormal).
Misunderstanding #3: ASD Is a Disease
While some adults with ASD may have a co-morbid mental health disorder, (e.g., depression or anxiety,) autism itself is not a disease or a mental illness. While the symptoms of the disorder can often be reduced through cognitive and behavioral therapy, it is a neurobiological disorder for which there is no spontaneous remission or cure. However, many adult with high-functioning autism who were diagnosed as children have lost many of their symptoms as adults.
Misunderstanding #4: If Someone Has ASD , He Must Be a Genius
This misunderstanding was popularized by the movie Rain Man, in which the main character had Aspergers and an extraordinary memory. He could memorize a jukebox play list at a glance and greatly enhance his odds at blackjack by counting cards.
While these misunderstandings may be true to some degree, the truth is that ASD is such a variable disorder that there are very few assumptions that can be made about any individual just from the diagnosis.