Learning Disability Screening Questionnaire (LDSQ

Child and Adolescent Intellectual
Disability Screening Questionnaire
McKenzie & Paxton
Dr Karen McKenzie
Why to we need a screening tool for
adolescents with a learning disability?
What makes a good screening tool?
Description of the CAIDS-Q
Uses of the CAIDS-Q?
Developing the CAIDS-Q: Validity and
Contact details
Why is there a need for a
screening tool?
Policy recommendations have led to a
demand on services to identify young people
with an intellectual disability as early as
possible e.g. in forensic settings
Full diagnostic assessments are expensive,
time-consuming and need to be carried out
by properly qualified, applied psychologist
Cost to individual and society if adequate
support is not given
What makes a good screening
Cost effective
Quick and simple to administer and score
Requires minimal training
Valid i.e. Measures what it sets out to
Reliable i.e. Gives consistent results across
time and different users
Description of the CAIDS-Q
Has 7 items
Can be completed with/by the individual or
by someone who knows him/her well
Takes 5-15 minutes to complete
Can be sent to referrers to complete
Easy to score
No training required
Covers age range 8-18 years
The CAIDS-Q can potentially help to:
Quickly identify appropriate services for an individual
Avoid a long wait for initial assessment
Allow resources to be targeted at those who need them most
Identify people who may be vulnerable e.g. within criminal
justice system
Provide a means for discriminating between groups for
research purposes
Help GPs identify those with an intellectual disability within their
Developing the Questionnaire
 Literature
search for existing tools
 Selecting the questions
 Standardisation,Validity &
 Easy to use
 Research base
Developed to distinguish between those
people who are typically referred to
intellectual disability and child and
adolescent mental health services
Also included a forensic sample
The CAIDS-Q score correlated significantly with
WISC IV scores
The CAIDS-Q scores could discriminate between
those with an intellectual disability and those without
A ROC analysis showed the CAIDS-Q could identify
people with an intellectual disability with 97%
accuracy and those without with 86% to 87%
accuracy (depending on the age of the individual)
Small forensic sample (n=23) found CAIDS-Q
correctly identified all those with and without an
intellectual disability.
Inter-rater reliability was significant
for each item on the questionnaire.
(It was excellent for all 7 items)
McKenzie, K., Paxton, D., Murray, G.C., Milanesi, P., & Murray,
A.L . (2012)The evaluation of a screening tool for children with
an intellectual disability: The Child and Adolescent Intellectual
Disability Screening Questionnaire. Research in Developmental
Disabilities. 33, 1068-1075.
McKenzie, K., Megson, P. & Paxton, D. (2008) The
development of a child learning disability screening
questionnaire: A pilot study. Learning Disability Practice, 11(5),
For more information
For more information contact GCM Records:
[email protected]
Or Karen McKenzie
[email protected]

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