Reliability and Validity of the Pediatric Quality of Life Inventory With Individuals With Intellectual and Developmental Disabilities.

The team checked if the Pediatric Quality of Life Inventory works for people with intellectual and developmental disabilities. They looked at kids and adults who had ID, developmental delay, or autism. The study asked if the tool gives steady scores and if it can tell healthy people from sick ones.

PedsQL showed excellent reliability and good validity for the IDD group. It clearly separated healthy people from those with chronic health problems. It also spotted differences between people with and without autism.

Cameranesi et al. (2025) later used the same tool for four years in adults moving out of institutions. They found quality-of-life scores jumped right after the move but slid back toward baseline without steady supports. Their work extends this 2015 paper by showing the measure stays sensitive over time.

Luckasson et al. (2022) validated pain-response profiles across IDD subgroups, much like this paper validated the QoL tool. Both studies give BCBAs new, tested measures for everyday use.

Friedman (2018) linked staff continuity to higher PedsQL scores in over 1,300 clients. Together the papers show the tool is solid and that staff stability is one clear way to raise the scores you record.

You now have a brief, free, parent-friendly scale that holds up in IDD. Use it at intake, after behavior plans, or when pain is suspected. Track changes to show families and funders that your services protect well-being, not just reduce problem behavior.