Adult autism assessments

Infinity Psychology & Assessments offers neurodiversity‑affirming autism assessments for adults that are supportive and collaborative, and which centre the voices of the neurodivergent community. Our goal is to help you understand yourself more clearly, and to offer practical insights as part of the assessment process.

How are our assessments neurodiversity-affirming?

We recognise autism as a natural variation of the human brain (‘neurotype’) – not a defect or disorder to be fixed. This means we:

• help you to understand your unique characteristics and qualities, such as communication style, passionate interests, or sensory processing differences

• recognise that many adults mask, camouflage, and do not fit stereotyped and outdated ideas of autism

• explore strengths, differences, and support needs – not just “deficits”

• respect self-knowledge and lived experience as meaningful data in the assessment process

• avoid language that is pathologising and outdated

Our approach centres the individual’s voice and experiences by adapting the Monteiro Interview Guidelines for Diagnosing the Autism Spectrum (MIGDAS-2). This interview framework explores areas such as sensory experiences, interests, social communication style, and relationships, and is well suited for adults who are high-masking. We also consider other sources of information such as your self-report, information from people who know you well, standardised psychometric measures, and any other documentation you may have.

The assessment process is transparent and collaborative. We explain what each part of the process will involve, invite you to ask questions, and accommodate any sensory, communication, or pacing needs. Some examples of how this might look in practice:

• Turning off overhead lights or lowering window blinds

• Using white noise or background music

• Providing regular breaks, and allowing time for a drink or snack

• Having no expectations about using eye contact if this causes discomfort

• Flexibility over the format of sessions (e.g., a mix of in-person and telehealth, if wanted)

Who might seek an adult autism assessment?

We often support adults with assessments who:

• are wondering whether they might be autistic

• have previously been misdiagnosed or overlooked because they didn’t fit stereotyped ideas of autism

• are high masking, AFAB, non-binary, or identify as LGBTQIA+

• want clarity, self‑understanding, or documentation for workplace and study accommodations

Comprehensive vs Brief Assessments

For adults seeking an autism or combined autism/ADHD assessment, we offer the option of either a comprehensive assessment or a brief assessment depending on your needs.

Comprehensive Assessments

A comprehensive assessment involves more assessment sessions (typically 5.5 hours in total), cognitive/psychometric testing (i.e., standardised testing of your thinking, reasoning, problem solving, and other brain-based abilities), and includes a comprehensive written report. This type of assessment is suitable for adults who are seeking a deeper understanding of their experiences and profile of results, and who wish to receive a detailed report to provide evidence for a formal application (e.g., NDIS, Disability Support Pension).

Brief Assessments

Brief assessments involve fewer assessment sessions (around 3.5 hours in total), and do not include cognitive/psychometric testing. A shorter summary letter of the outcomes is provided, rather than a comprehensive report. This type of assessment may be best for adults who are seeking assessment primarily for self-understanding, who only require brief documentation to confirm whether they meet any diagnostic outcomes or not, and who do not have other complex queries that they wish to also explore (e.g., learning difficulties, complex mental health).

Please see our Fees & FAQs page for further information about comprehensive and brief assessments, and the types of reports offered.
Our admin team are happy to explain these options further to help you decide which may be most suitable for your situations and needs.