The multiple sclerosis functional composite is a method of measuring the severity of multiple sclerosis primarily used in research. The score is based on a combination of timed tests of walking, arm function, and cognitive ability. It was developed over two years from 1994 to 1996 by the National Multiple Sclerosis Society. The multiple sclerosis functional composite is a method of measuring the severity of multiple sclerosis primarily used in research. The score is based on a combination of timed tests of walking, arm function, and cognitive ability. It was developed over two years from 1994 to 1996 by the National Multiple Sclerosis Society.