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Neurodiversity Series: Preparing for a Neurodevelopmental Assessment: How to Get the Most from the Process

If you’re about to undergo a neurodevelopmental assessment for autism and/or ADHD, it’s natural to want the process to provide the clearest and most accurate understanding of your needs. Assessments like these can be invaluable for gaining insights about yourself and accessing appropriate support.

Here are some steps to help you prepare for the assessment and ensure you and your assessor can make the most of the process.

Reflect on Your Reasons for Seeking an Assessment

Clearly explain why you think you might be neurodivergent. What traits or experiences resonate with the core characteristics of autism and/or ADHD? Many people find it helpful to jot down notes over a few weeks or months, documenting observations about themselves. These notes can be shared with your assessor, so check how they prefer to receive this information.

Gather Relevant Documents

  • School Reports - If you can access past school reports, bring them to your assessment. They sometimes contain useful observations from teachers about your behaviour and development, which can prompt memories of your childhood and adolescence.
  • Letters or Reports from Professionals - If you’ve previously seen healthcare or social care professionals, any related documents can provide valuable context for your assessment. Share what you have—even if it feels incomplete.

Identify a Trusted Informant

Neurodevelopmental assessments often involve input from someone who knows you well. This person can provide insights about your behaviour, patterns and preferences over time. While it’s ideal to include someone from your childhood, an informant from adulthood is also valuable. Choose someone you trust and who understands you well.

Complete Assessment Materials Thoroughly

You may be asked to fill out questionnaires, forms, or engage in tasks and discussions. While this can feel overwhelming, it’s important to complete these as fully as possible. Break the process into smaller, manageable steps if needed, and don’t hesitate to ask your assessor for support if you’re struggling.

Request Reasonable Adjustments

Feeling comfortable and supported during the assessment is crucial for providing accurate information. Here are examples of adjustments you might consider requesting if you need them:

  • Pre-Appointment Questions - If you have concerns or need clarification, ask to speak with your clinician before the appointment. Many assessors are happy to answer questions by phone, email, or online.
  • Sensory and Environmental Adjustments - Let your assessor know if certain sensory elements—like lighting or noise—might affect your comfort. You’re welcome to bring items like sensory toys or stim tools, or use ones provided by the service, to help you stay calm.
  • Separate Meetings for Informants - If having your informant present during discussions feels uncomfortable, ask if they can provide written information and/or attend a separate session.
  • Flexible Scheduling - Request breaks during longer sessions or split them into shorter appointments if that helps you stay focused and comfortable.
  • Unmasking - It’s okay to let go of any social masking behaviours you might usually adopt. Be yourself—whether that means avoiding eye contact, pacing, or sitting in a way that feels natural to you.

Prioritise Self-Care

The assessment process can bring up a range of emotions. Here’s how to care for yourself:

  • Get enough rest before your appointment.
  • Give yourself some relaxation time after the appointments.
  • Plan something comforting for afterward, like a favourite activity or meal.
  • Remind yourself that this process is about understanding and growth, not judgment.

Advocate for Yourself

If something isn’t working for you during the assessment, speak up and share your concerns with the assessor. Whether it’s needing more time, clearer instructions, or additional support, your needs are valid and should be accommodated wherever possible.

Moving Forward

Engaging in an autism or ADHD assessment is a significant step toward understanding yourself. Whether your assessment is with us or another service, we hope these tips empower you to approach the process with confidence.

Dr Jo Coombs BPS

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