Deakin Research Online This is the published version:

The importance of measuring quality of life, and most particularly the personal wellbeing of people with intellectual disabilities (ID), is now recognized. The measurement of wellbeing is an important component of program evaluation and can assist in the identification and planning of individualized support needs. There remains, however, a need for further research in this area. This paper describes a new scale, the Personal Wellbeing Index Intellectual Disability Scales (PWI-ID), which has been shown to be valid and reliable. Data is presented regarding its use in the measurement of wellbeing in people with ID and the focus of discussion is on its advantages and limitations. The measurement of quality of life has been the focus of increased research attention with respect to people with ID. The importance of this work lies in the fact that the right to receive services and the conditions of life that promote wellbeing in this population is now enshrined in legislation & policy. Local examples are the Disability Services Act (Commonwealth of Australia