Hello Monique

The scale is at the end of this paper available on ResearchGate. It is not very long:

Gómez, L. E., Arias, B., Verdugo, M. Á., & Navas, P. (2012). Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability. Journal of Intellectual and Developmental Disability, 37(2), 141-150.

http://www.researchgate.net/publication/224869685

Very best wishes

Mary

Article Application of the Rasch Rating Scale model to the assessmen...

Hi Monique,

There is also the Personal Wellbeing Index – Intellectual Disability (English) (PWI-ID) scale to consider.  The scale is available via the Australian Centre of Quality of Life (ACQOL)

www.acqol.com.au/iwbg/wellbeing-index/pwi-id-english.pdf

McGillivray, J.A., Lau, A.L.D., Cummins, R.A., & Davey, G. (2009). The utility of the Personal Wellbeing Index Intellectual Disability Scale (PWI-ID) in an Australian sample. Journal of Applied Research in Intellectual Disability, 22, 276-286.

Regards,

Jane

www.acqol.com.au/iwbg/wellbeing-index/pwi-id-english.pdf

Look at the "Reiss Profile of Human Needs."  

Thank you all for your suggestions. It is very helpful.

How about the MANS-LD ? 

Data MANS-LD Easy Read Prospective (with WHOQOL)