GAS meaning in Medical ?

Goal attainment scaling (GAS) is a therapeutic method that refers to the development of a written follow-up guide between the client and the counselor used for monitoring client progress. GAS was first developed by Thomas Kiresuk and Robert Sherman in response to the wide variety of evaluation models regarding mental illness and treatment. With the advent of GAS, Kiresuk and Sherman sought to create an evaluation program that could measure effectiveness across several different modalities and justify economic and labor resources based on effectiveness. Evaluation practices are important for justification and support for services, especially in mental health. The existing evaluation procedures had problems in definition and measurement, and each mental health center used its own definitions and measurements to evaluate. This created unspecified and informal evaluations. The variety of evaluation methods also made comparisons impossible. Thus, evaluation reform was needed.