Does severe autism necessarily include intellectual disability symptoms? Or it is possible to having severe autism as well as moderate or high general intelligence?
I have searched Internet but I did not found a clear satisfactory search result. Some articles like Autism As a Disorder of High Intelligence, State of the Field: Differentiating Intellectual Disability From Autism Spectrum Disorder etc. it is not clear to me that whether all 'severely autistic's are also necessarily 'intellectually disabled' or not.
Many thanks in advance.