The influence of supports strategies, environmental factors, and client characteristics on quality of life-related personal outcomes.

Celletti et al. (2012) asked what makes life better for adults with intellectual disability. They looked at three things: support plans, where people live and work, and how severe the disability is. They used surveys and records to see which factors predicted higher quality-of-life scores.

More formal support strategies, living in supported homes, having a job, and milder ID each boosted quality-of-life scores. These four factors worked on their own; you did not need all four to see a gain.

Hatton et al. (2005) ran a close cousin study across four countries and found the same QOL domains matter, giving the 2012 numbers a sturdy backbone.

Balboni et al. (2013) showed that when clients cannot speak for themselves, caregiver reports are reliable. Claudia et al. used both self and proxy data, so the finding stays solid either way.

Sigstad et al. (2025) zoomed in on the work piece. Norwegian bosses say inclusive culture plus tailored supports keep adults with ID employed. That story fits Claudia’s data: employment links to better QOL because good supports are in place.

If you write support plans, fight for supported living, or job-coach adults with ID, this paper gives you ammo. Push for formal support strategies, not just generic services. Pair housing and employment goals; each alone moves the QOL needle. And remember milder IQ is not the only path—supports can lift everyone.