The GARS-2 Revised Scale (GARS.2) consists of: 1. The CARS-2-ST: This scale is used for children aged 2 to 6 years with an IQ of 79 or less and who have a disability in communicating clearly. 2. The CARS-2-ST: Information is collected primarily from direct observation and then from parents. This instrument is designed for the professional practitioner and is not a measuring instrument by which parents evaluate their children. It is intended for an IQ level above 80. 3. The questionnaires part of the scale