Global Assessment of Functioning (GAF): Assessing Function
Clinicians use the Global Assessment of Functioning to rate an adult's psychological, social, and job performance. This 100-point scale helps track how mental health affects daily living skills.

Global Assessment of Functioning (GAF)
The Global Assessment of Functioning (GAF) is a numeric scale used by mental health clinicians to rate social, occupational, and psychological functioning. Scored from 0 to 100, this tool helps track treatment progress. While newer methods exist, it's a recognised way to measure how mental illness affects daily life.
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What is Global Assessment of Functioning (GAF)
The Global Assessment of Functioning (GAF) is a standard numeric scale used to rate how well an adult handles daily life and mental health challenges. This tool tracks psychological, social, and occupational functioning on a single continuum. It helps pros get a quick snapshot of overall wellbeing without needing complex testing. Clinicians rate patients from 0 to 100, where higher scores mean superior functioning with no symptoms. Lower numbers point to serious impairment or danger to self. The scale splits into ten point intervals so it is easy to spot where a client sits. It is handy for planning treatment and checking if therapy is working. Since it is quick to finish, doctors often use it to track progress over time or for insurance needs. Even though newer methods exist, the GAF remains a solid choice for monitoring how a patient recovers in practical settings.
The Global Assessment of Functioning can be scored using one main approach based on clinician judgment. Clinicians rate a patient's psychological, social, and occupational functioning on a numeric scale from 0 to 100. You'll pick a single number that best reflects the lowest level of functioning in the past week. Higher scores mean better mental health, while lower numbers indicate serious impairment or danger to self. For instance, a score of 85 suggests good functioning, but a 25 points to delusions or inability to function. It's a handy snapshot for tracking progress over time.
Advantages
Measures healthcare intervention results systematically.
Develops personalised strategies based on assessment data.
Serves diverse clinical needs effectively.
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