High Functioning Autism (HFA) is not a clearly defined diagnosis. Rather, it is a label given when someone meets (or met as a child) the diagnostic criteria for autistic disorder but is able to speak and has an average or above average IQ. The primary distinction between High Functioning Autism and Asperger Syndrome is early development - primarily of language. High Functioning Autistics are often mis-labelled with Asperger Syndrome if speech is adequate at the time of assessment.

Me :D