Psychometric Properties and Utility of the Social Vulnerability Questionnaire for Individuals with Intellectual and Developmental Disabilities.
The SVQ is a quick, valid way to measure how likely adults with IDD are to be victimized.
01Research in Context
What this study did
Giesbers et al. (2020) built and tested a new tool. The tool is called the Social Vulnerability Questionnaire, or SVQ. It asks questions that show how likely a person is to be hurt or taken advantage of.
The team gave the SVQ to adults with intellectual or developmental disabilities. They ran two kinds of math checks to see if the questions hang together and measure what they claim to measure.
What they found
Both math checks passed. The SVQ is reliable and valid. That means it gives steady scores and truly tracks social risk.
Clinicians can now use the short form to spot who needs safety planning.
How this fits with other research
Lunsky et al. (2014) also built a brief scale for the IDD world. Their tool tracks staff burnout, while the SVQ tracks client risk. Both use factor analysis and take two minutes to finish.
Moreira et al. (2025) show that quality of life and support needs shape self-determination. The SVQ adds the missing safety piece. Use all three together to see the whole adult.
Festinger et al. (1996) found that social-skills scores do not keep friendships alive. The SVQ goes deeper by asking about real-world threats, not just skills. Skills may open doors, but vulnerability decides what happens next.
Why it matters
You now have a free, ten-item screen that flags victimization risk in adults with IDD. Add it to your intake packet. If the score is high, write a safety goal in the behavior plan and teach self-protection responses. One page, five minutes, big payoff.
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02At a glance
03Original abstract
Although it is well-known that individuals with intellectual and developmental disabilities (IDD) are socially vulnerable, the field lacks valid assessments to identify risk factors for victimization. Parents/caregivers of 428 individuals with IDD (ages 12-53) completed the social vulnerability questionnaire (SVQ), a measure developed to assess specific aspects of social vulnerability among individuals with various forms of IDD. This study examined the psychometric structure of the SVQ (exploratory and confirmatory factor analysis), and the utility of the factors of the SVQ as predictors of diagnostic category (through discriminate function analysis). Results provide psychometric support for use of the SVQ and its factors for further research and as part of a clinical assessment battery to assess social vulnerability and to develop interventions.
Journal of autism and developmental disorders, 2020 · doi:10.1007/s10803-018-3636-4