Securing Personal Input from Individuals Aging with Intellectual Disability: Do Differing Methodologies Produce Equivalent information?

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Stuart Wark
Miranda Cannon-Vanry
Marie Knox
Marie Parmenter
Rafat Hussain
Matthew Janicki
Chez Leggatt-Cook
Meaghan Edwards
Trevor Parmenter


aging, Intellectual disability, Likert-scales and Qualitative interviews


Research is limited on whether differing methodologies for facilitating personal contributions from individuals aging with intellectual disability produce equivalent knowledge outcomes. Two matched purpose-developed tools examined five quality-of-life domains. Results showed substantial variance between qualitative interview responses and Likert-scale data, and indicate validity concerns for using either methodology in isolation.

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