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Vineland Adaptive Behavior Scales (Vineland-3)
Birth to 90 years
The Vineland Adaptive Behavior Scales, Third Edition, measures adaptive functioning, meaning how a person manages the practical demands of everyday life. It covers birth to 90 years and is also searched for as the Vineland-3 assessment and the adaptive behaviour assessment.
Adaptive functioning is frequently the deciding evidence in an assessment, and it is the part families are least often told about in advance.
What does the Vineland-3 measure?
Three core domains, with a fourth available where relevant.
- Communication. Receptive, expressive and written language as used in daily life.
- Daily Living Skills. Personal care, domestic tasks and community skills such as handling money and transport.
- Socialisation. Interpersonal relationships, play and leisure, and coping skills.
- Motor Skills. Fine and gross motor function, for younger children and where relevant.
Why does adaptive functioning matter so much?
Because intellectual disability cannot be established on cognitive scores alone. The diagnostic criteria require deficits in both intellectual functioning and adaptive functioning, with onset during the developmental period. A low IQ score without corresponding adaptive difficulty does not meet criteria.
It matters for NDIS access as well. The NDIS is concerned with functional impact, meaning what a person can and cannot do in daily life, rather than with diagnosis in the abstract.
How is it administered?
It is completed by someone who knows the person well in daily life, usually a parent, partner, carer or teacher, either as a semi-structured interview conducted by the psychologist or as a rating form.
We generally prefer the interview format where time allows, because follow-up questions surface detail a tick-box form misses. A parent may rate a skill as present because their child can do it, when what emerges in conversation is that it happens only with prompting, only at home, and not reliably.
What does it not tell you?
It does not measure intelligence and it does not diagnose anything on its own. It describes current functioning, which changes with support, intervention and maturation.
It also reflects the perspective of whoever completed it. Where two informants describe someone quite differently, that difference is information rather than a problem to be averaged away.
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This page is general information about an assessment instrument and is not clinical advice. Whether a particular assessment is appropriate depends on the individual and the question being asked.