The Children's Global Assessment Scale (CGAS) was developed to provide a measure of severity of disturbance in children and adolescents. It is designed to reflect the lowest level of functioning for a child or an adolescent during a specified period. The measure provides a single global rating only, on a scale of 1 to 100. Clinicians assign a score, with 1 representing the most functionally impaired child, and 100 the healthiest child. Scale ranges: | 100-91 | Superior functioning in all areas | | 90-81 | Good functioning in all areas | | 80-71 | No more than slight impairments in functioning | | 70-61 | Some difficulty in a single area but generally functioning pretty well | | 60-51 | Variable functioning with sporadic difficulties or symptoms in several but not all social areas | | 50-41 | Moderate interference in functioning in most social areas or severe impairment of functioning in one area | | 40-31 | Major impairment of functioning in several areas and unable to function in one of these areas | | 30-21 | Unable to function in almost all areas | | 20-11 | Needs considerable supervision | | 10-1 | Needs constant supervision |
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