Autism Spectrum Disorder (ASD) Assessments for Adults

Eastside Psychology Clinic offers comprehensive ASD assessments for adults in Sydney. If you have always felt different in social situations, struggled with communication, or found change overwhelming, an assessment can provide clarity. Importantly, many adults seek an ASD assessment later in life to better understand long-standing challenges and access appropriate support.

Autism Spectrum Disorder (ASD) is a neurodevelopmental condition that affects social communication, interaction, and behaviour. Although ASD presents differently in each person, clinicians assess several core characteristics.

For example, adults with ASD may:

• Prefer spending time alone rather than socialising

• Struggle to interpret facial expressions or body language

• Take language literally and miss implied meaning

• Experience significant anxiety in social situations

• Rely heavily on routines and feel distressed by unexpected change

In addition, many adults develop intense interests in specific topics. While these interests can become strengths, they may also limit flexibility in daily life.

ASD commonly co-occurs with other conditions. For instance, many adults experience ADHD, anxiety disorders, or depression alongside ASD. Therefore, a thorough assessment ensures accurate diagnosis and appropriate treatment recommendations.

A psychologist with specialist training in adult autism assessment conducts a structured and evidence-based evaluation. An ASD assessment for adults does more than determine whether you meet diagnostic criteria. It also helps you understand how you think, process information, and interact with others.

Specifically, an assessment can:

• Determine whether you meet criteria for ASD

• Identify cognitive and behavioural strengths

• Clarify areas of difficulty

• Provide tailored recommendations for support

• Assist with workplace or university accommodations

As a result, many adults feel relief and validation after receiving a clear explanation for their experiences.

Clinicians use gold-standard, standardised tools when conducting an ASD assessment for adults. I use validated instruments and gather detailed background information to ensure accuracy.

1. Autism Diagnostic Interview – Revised Edition (ADI-R)

The ADI-R is a clinical interview conducted with individuals or caregivers (when applicable) to assess behavioural patterns, communication, and social functioning. The responses are scored based on the DSM-5 diagnostic criteria to determine the likelihood of an ASD diagnosis.

2. Autism Diagnostic Observation Schedule – 2nd Edition (ADOS-2)

The ADOS-2 is a semi-structured, standardised observation tool that evaluates social communication, restricted behaviours, and repetitive actions. The ADOS-2 is often used in conjunction with other tools to provide a thorough assessment of ASD traits.

3. Ritvo Autism Asperger Diagnostic Scale – Revised (RAADS-R)

The RAADS-R is a clinician-administered questionnaire designed to assess symptoms of social relatedness, language difficulties, and sensory-motor issues commonly seen in adults with ASD.

4. Additional Information

If available, additional information from family members, teachers, and health professionals can be helpful for a comprehensive understanding of the individual’s symptoms. This multi-source approach ensures a more accurate assessment.

If you suspect you may have Autism Spectrum Disorder, seeking a professional ASD assessment for adults can provide clarity and direction. Although many adults develop coping strategies over time, understanding the underlying cause of ongoing challenges can feel empowering.

To make an enquiry about an ASD assessment for adults, or to schedule an appointment, please contact me.