INTELLECTUAL DEVELOPMENT AND INTELLECTUAL DISABILITY ASSESSMENT
Understanding ability and everyday support needs.
Intellectual disability assessment in Canberra for children, adolescents and selected adults where there are questions about intellectual development, adaptive functioning, developmental delay and support needs.
01 — THE QUESTION
Could intellectual development be affecting learning and everyday life?
WHAT MAY RAISE THIS QUESTION
A person may be learning new skills more slowly than expected, needing more help with everyday tasks, or finding increasing demands harder to manage as they get older.
WHAT ASSESSMENT CAN CLARIFY
Assessment can help understand whether these difficulties reflect a broader difference in intellectual development, what the person’s strengths and support needs are, and whether further support or diagnosis should be considered.
Frequently Asked Questions (FAQs) about Intellectual Development Assessment
Intellectual development
How much does Intellectual Development assessment cost?
Assessments are charged by the hour at the current rate listed on Our Fees.
Because the assessment pathway depends on your child and the question being asked, the total cost can usually be estimated more accurately after the first consultation. The first consultation generally involves approximately one hour of professional time at the current rate. For more information about why we do not offer fixed price packages, see FAQs.
We will discuss likely next steps and associated fees before you decide whether to proceed. See Our Fees → for more information and an example assessment cost structure.
Can BPA diagnose Intellectual Developmental Disorder (Intellectual Disability)?
Yes. Where the available evidence is sufficient, BPA can diagnose Intellectual Developmental Disorder (Intellectual Disability).
Assessment considers intellectual ability, adaptive functioning, developmental history and how the person manages everyday demands. A low cognitive score alone is not enough to make the diagnosis.
Sometimes we may identify findings that are consistent with Intellectual Developmental Disorder but determine that additional medical or developmental assessment is needed before the overall diagnostic picture is complete. In these circumstances, we may provide a provisional formulation or defer a final diagnostic conclusion and recommend review by a GP, paediatrician or other appropriate medical practitioner.
A medical practitioner can then consider the psychological findings alongside the person’s physical, developmental and medical history and, where appropriate, confirm or further clarify the broader diagnostic formulation.
Is a low IQ score the same as Intellectual Developmental Disorder (IDD), formerly known as Intellectual Disability (ID)?
No.
Intellectual Developmental Disorder (IDD), formerly known as Intellectual Disability (ID), is not determined by an IQ score alone.
Assessment also considers adaptive functioning, developmental history and how the person manages everyday conceptual, social and practical demands.
What is adaptive functioning?
Adaptive functioning refers to the skills a person uses to manage everyday life.
This may include communication, learning and applying information, social functioning, self-care, independence and practical everyday tasks.
How is an Intellectual Development assessment different from a cognitive assessment?
A cognitive assessment focuses on intellectual abilities and the person’s cognitive profile.
An Intellectual Development assessment considers cognitive ability together with adaptive functioning and developmental information to answer a different question.
Who provides information about adaptive functioning?
We usually seek information from people who know the person well in everyday life.
Depending on the person’s age and circumstances, this may include parents, carers, teachers or other people with a good understanding of day-to-day functioning.
What if cognitive ability and everyday functioning seem very different?
That is important information.
The aim is not to force the two sets of information to match.
We consider why they may differ, whether more information is needed and what the overall pattern means for the person’s strengths and support needs.
Can younger children be assessed for intellectual development?
Yes, where appropriate, however cognitive assessment findings are generally not considered to be stable until at least age 6.
Development can change quickly in younger children, so findings sometimes need to be interpreted cautiously, monitored or reviewed as the child develops.
Why might you recommend a medical assessment as well?
Psychological assessment can establish a person’s cognitive and adaptive profile, but it cannot answer every question about why those differences are present.
Where appropriate, medical assessment may help identify or investigate genetic, neurological, developmental or other health factors, consider co-occurring conditions and make sure important medical needs are not overlooked.
For complex neurodevelopmental presentations, Australian Medicare guidance similarly recognises the importance of considering both physical and developmental assessment.
Does an IQ below 70 automatically mean intellectual disability?
No.
Intellectual disability is not diagnosed from an IQ score alone. We also need to understand the person’s adaptive functioning — how they manage conceptual, social and practical demands in everyday life — and whether the difficulties began during the developmental period.
Two people with similar cognitive scores can function quite differently in everyday life. Australian Government intellectual-disability guidance likewise emphasises adaptive functioning rather than classifying severity from IQ alone.
What if cognitive testing and adaptive functioning tell us different things?
That can be clinically important.
The results do not have to “match”. We look at why the difference may have occurred, the quality of the available information, the person’s developmental history and whether further assessment is needed.
Sometimes the difference itself helps us understand the person’s strengths, support needs or why their difficulties have previously been hard to recognise.
How do you determine whether intellectual disability is mild, moderate, severe or profound?
Current approaches place particular emphasis on adaptive functioning and the level of support a person needs in everyday life, rather than simply assigning severity from an IQ score.
We consider functioning across conceptual, social and practical areas together with the broader clinical picture.
Can someone have intellectual disability even if they seem capable in some areas?
Yes.
People can have meaningful strengths alongside intellectual disability. Someone may communicate well, have strong interests, manage familiar routines independently or perform better in some cognitive areas than others.
Assessment looks at the overall pattern of intellectual and adaptive functioning, rather than assuming a person must have difficulty with everything.
Can intellectual disability be diagnosed in young children?
Yes, but only where appropriate and supported by clear medical evidence, as cognitive assessment findings are generally not considered to be stable until at least age 6. Sometimes it is better to consult with a medical doctor such as a paediatrician when children are younger than 6.
Development can change quickly in younger children, so findings sometimes need to be interpreted cautiously, monitored or reviewed as the child develops.
Can adults be assessed for intellectual disability?
Yes, in appropriate circumstances.
Because Intellectual Developmental Disorder begins during the developmental period, adult assessment also looks for evidence about childhood development, education, functioning and longstanding support needs.
Historical reports, school records and information from family or other people who knew the person earlier in life can be particularly helpful, although we recognise that these records are not always available.
Will the assessment tell us what caused the intellectual disability?
Not necessarily.
Psychological assessment can describe how a person thinks and functions and determine whether the pattern supports a diagnosis, but identifying an underlying cause may require medical investigation.
Where the cause is unclear or there are features suggesting a genetic, neurological or other medical condition, we may recommend discussing further investigation with a GP, paediatrician or relevant specialist.
Can the assessment help with NDIS evidence?
Yes, where clinically appropriate.
Psychological assessment can provide evidence about intellectual functioning, adaptive functioning, diagnosis and everyday support needs. The NDIS specifically identifies psychologists among the professionals who can provide evidence for intellectual disability, developmental delay and related conditions.
BPA cannot determine NDIS eligibility or guarantee a particular funding outcome. The NDIA makes those decisions and may request additional evidence from other health professionals.
Can the report be used for the NDIS?
A psychological assessment may provide useful evidence about diagnosis, functioning and support needs. BPA can help you to complete NDIS application forms where this may be helpful, and where clinically appropriate.
BPA does not determine NDIS eligibility and cannot guarantee access to particular supports or funding.
For current information about support for younger children, see the NDIS information about getting help for your child.
Is assessment only about diagnosis?
No.
Understanding a person’s strengths, everyday functioning and support needs can be useful even where the main purpose is planning rather than obtaining a diagnostic label.
02 — WHEN ASSESSMENT MAY HELP
Assessment can help clarify development and support needs.
Development & learning
Where development or learning has been substantially slower than expected, or there are questions about the person’s overall intellectual abilities.
Everyday independence
Where there are concerns about communication, self-care, social functioning, decision-making or managing everyday tasks expected for the person’s age.
Diagnostic & support questions
Where assessment is needed to clarify whether an Intellectual Developmental Disorder may be present, understand functional support needs, or inform decisions about services to help.
03 – TWO PARTS OF THE PICTURE
Intellectual development is considered across several areas.
Intellectual functioning
Standardised cognitive assessment examines different aspects of thinking and reasoning. Results help establish the person’s broader cognitive profile and level of intellectual functioning.
Adaptive functioning
Adaptive assessment looks at how effectively the person manages age-appropriate demands in everyday life. Information is usually gathered from people who know the person well across relevant settings.
Developmental, educational, health and cultural context is considered when interpreting both.
04 — ADAPTIVE FUNCTIONING
Everyday functioning is considered across several areas.
Conceptual skills
Communication, understanding information, functional academics, organisation and other skills used to manage everyday tasks.
Social skills
Understanding social situations, relationships, judgement and navigating expectations involving other people.
Practical skills
Personal care, safety, routines, community participation and the practical skills needed for increasing independence
05 – DIAGNOSIS & INTERPRETATION
A low cognitive score alone does not establish intellectual disability.
Assessment for Intellectual Developmental Disorder (IDD), formerly known as Intellectual Disability (ID), considers evidence of difficulties in both intellectual functioning and adaptive functioning, with the pattern beginning during the developmental period.
Results are interpreted alongside developmental and educational history, health information, opportunities to learn and other factors that may impact performance or everyday functioning.
06 – INFORMATION FROM DIFFERENT SETTINGS
The clearest picture usually comes from more than one source.
Family & caregivers
Where there are questions about cognitive development, early learning, communication, behaviour or everyday independence.
School, work or services
Teachers, support workers or other relevant people may provide a different perspective on functioning outside the home. Previous reports and records can also be useful.
Where appropriate, BPA may work with our client’s GP, paediatrician, allied health professionals, educators or other practitioners where the person’s needs cross professional disciplines.
Concerned about intellectual development in a child under 6 years old? For younger children, questions about intellectual development often sit alongside broader questions about communication, social development, behaviour, school readiness and adaptive functioning. A broader developmental assessment may therefore be more appropriate than considering intellectual functioning in isolation. Families may also be able to access early developmental support without first paying for a private assessment. For more information, see Assessment for Younger Children →
07 — SUPPORT & NDIS
Assessment can help describe support needs, not just a diagnosis.
Understanding functional needs
Assessment may help explain the areas in which a person requires assistance, the level of independence that can reasonably be expected, and what supports or adjustments may be appropriate.
NDIS & other services
Cognitive and adaptive assessment may provide useful evidence where disability or support needs need to be documented for the NDIS, education or other services. A BPA assessment can contribute evidence, but does not determine eligibility or guarantee access to funding or supports.
08 – WHAT YOU RECEIVE
A clearer understanding of ability, functioning and support needs.
Integrated findings
Cognitive, adaptive and contextual information brought together into a coherent understanding of the person.
Considered feedback
A dedicated appointment to explain the findings and discuss their practical meaning.
Report & recommendations
A written report addressing diagnostic questions where appropriate and providing practical recommendations for education, everyday functioning, and supports.
09 – FEES & NEXT STEP
Start with the question you would like answered.
Our screening process helps us determine which information is already available, whether cognitive and adaptive assessment are required, and whether BPA is an appropriate service for the referral question. We explain likely fees during initial appointments before you proceed.