Autism Assessment (Children & Young People)
Autism Assessments at CADS
Autism assessments at CADS are carried out by Tania Richards (Speech and Language Therapist) and Dr Astrid van Wilsem (Clinical Psychologist) using a gold-standard, multidisciplinary approach.
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The autism assessment pathway includes:
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Parent/carer referral and developmental history
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Autism Diagnostic Interview – Revised (ADI-R)
A detailed 3-hour structured interview completed online with Dr Astrid van Wilsem -
Autism Diagnostic Observation Schedule (ADOS-2)
A 1–1.5 hour observational assessment completed by Tania Richards (face-to-face preferred, online possible) -
School or setting feedback (where applicable)
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Multidisciplinary diagnostic review
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Feedback appointment and comprehensive written report
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Assessments are tailored to the child or young person’s age, communication profile, and individual needs.
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Dual Autism & ADHD Assessments
Dual Autism & ADHD Assessments (Child & Young Person)
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Many children, young people, and adults present with overlapping autistic and ADHD traits. CADS offers combined autism and ADHD assessments, allowing both profiles to be explored within a single, integrated process.
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A dual assessment includes:
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Full autism assessment pathway (ADI-R, ADOS-2, school feedback)
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ADHD-specific clinical interview (e.g. Young DIVA)
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Additional observation and interview focusing on attention, regulation, and executive functioning
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ADHD rating scales completed across settings
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Multidisciplinary team diagnostic formulation
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This approach reduces duplication, supports diagnostic clarity, and provides a joined-up understanding of strengths and support needs.
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Fees & Timeframes
Fees
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Autism Assessment: £2,000
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ADHD Assessment: £1,300
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Combined Autism & ADHD Assessment: £2,900
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All fees include the full assessment process, feedback appointment, and detailed written diagnostic report.
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Timeframes
We are currently booking assessments for February 2026 as referrals are received. Where possible, information gathering begins in advance, with final outcomes typically provided within 1–2 weeks of the final assessment session.
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