The Global Assessment of Functioning, or GAF, scale is used to rate how serious a mental illness may be. It measures how much a person's symptoms affect their day-to-day life on a scale of 0 to 100.

The Global Assessment of Functioning (GAF) is a scoring system that mental health professionals use to assess how well an individual is functioning in their daily lives. This scale was once used ...

Although an autism spectrum scale has been described in the past, doctors currently diagnose autism with levels. Levels range from 1–3. Share on Pinterest Pollyana Ventura/Getty Images Autism is ...