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Psychological services in Market Harborough

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Assessment and Diagnostic Options

The comprehensive assessment and diagnostic options available are assessments of:

  1. Autism Spectrum Disorder (ASD)
  2. Asperger’s Syndrome (AS)
  3. Attention Deficit Hyperactivity Disorder (ADHD)
  4. Tourette’s Syndrome
  5. Global Intellectual Disability (this does not include specific learning difficulties such as dyslexia)
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Professional Clinical Assessments

Professionally Recognised and Accepted Diagnostic Assessments

It is vital that when seeking formal assessment for Autism Spectrum Conditions and ADHD that these are conducted using industry recognised and accepted assessment tools and methods.  The tools used within my work fulfil formal diagnostic criteria as dictated by the NICE Guidance (2010) for Autism and NICE Guidance (2018) for ADHD.

The assessment process involves formally recognised assessment tools and psychometric testing necessary for all the developmental conditions listed above.  The formal diagnostic assessment is complex and comprehensive which is necessary to ensure a conclusive outcome and will include:

  • An initial fixed fee screening appointment lasting approximately 60 minutes
  • A variety of psychometric questionnaires for the client and family members/partners to complete which will then be scored and rated
  • If mutually agreed that a full assessment is indicated, a full history and general assessment lasting 90-120 minutes
  • For AS assessments this will involve the Adult Asperger’s Assessment
  • For ADHD assessments this will involve the Brown’s ADD Scales
  • Developmental interview, for Autism conditions, this will include the use of the Diagnostic Interview for Social and Communication Disorders (DISCO)
  • Analysis of school reports and other letters and documents relevant to the assessment
  • Psychometric testing of attention (for ADHD only)
  • Feedback of results and recommendations
  • Final detailed written report


  • In some cases it may be necessary for me to use the Autism Diagnostic Observation Scale (ADOS) as well, though this is an additional assessment package and requires more time and further payment.

All diagnostic assessment will be handled confidentially and respectfully and careful consideration will be taken to ensure there is a significant clinical reason for undertaking such assessments.  All this will be decided and discussed at an initial screening assessment.


Important note regarding private assessments

I’m always mindful that the private route can be costly.  It’s understandable that people will therefore wish to shop around.  I would advise though that it is very important however, to make sure that the clinician / service chosen has sufficient qualifications, knowledge and experience and uses the appropriate assessment tools that will constitute an official diagnosis.

The NICE Guidelines for Autism (2014) and Autism Act (2009) stipulate the necessary requirements:

In both my private work, and more often in my current ADHD & Asperger’s NHS work, I encounter private assessment reports that lack necessary rigour and robustness necessary.  Regrettably, some of these are subsequently rejected by GPs and specialist services.                     


Diagnostic Assessment Fees:

  • Initial Screening Assessment (fixed fee) £165
  • Clinical assessment rates per hour £100
  • Paperwork, letters, reports per hour spent £100
  • Travel incurred related to appointments per hour £50
  • Late cancellation fees per hour if cancelled with less than 48 hours before the appointment – £50.  There will be a full hourly rate charge if cancelled less than 24 hours before
  • Follow-up work/psychological therapy per hour £100
  • Basic letters such as diagnosis confirmation letters £50
  • Payment can be made by cash, debit or credit cards, or bank transfer.

A full diagnostic assessment will take approximately seven hours to complete including administration and report/letter writing.  To make costing simpler, I’ve detailed prices below with assessment package prices:

Full Asperger’s Assessment with comprehensive report – £750

Full ADHD Assessment with comprehensive outcome report – £750


(Please note, if you do come for an initial screening (£165) you will be entitled to a 5% discount from the full assessment cost should you agree to engaging with a diagnostic assessment with Clear Sky Therapies).  Payments can be made in cash, debit and credit cards, or by bank transfer.  Payment must be made before the start of each appointment.

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