Can a Standardised Assessment Tell the Whole Story?

Why Occupational Therapists Look Beyond Scores

As paediatric occupational therapists, we are increasingly hearing conversations about standardised assessments, functional capacity, measurable outcomes, and the need for objective data.

In many ways, this is a positive development.

Standardised assessments provide valuable information. They help us identify strengths and challenges, compare performance against normative data, monitor progress over time, and support consistent clinical decision-making.

As a profession, we have invested significant time, money, and training into learning how to administer, score, interpret, and apply these assessments responsibly. Tools such as adaptive behaviour assessments, sensory processing measures, developmental assessments, motor assessments, and participation measures all contribute important pieces to understanding a child's functioning.

But an important question remains:

Can a standardised assessment tell the whole story of a child's capacity?

The answer is both yes and no.

The Value of Standardised Assessments

Standardised assessments are designed to answer specific questions.

They can help us understand:

• What skills a child has acquired
• How a child performs compared to peers of the same age
• Areas of strength and challenge
• Changes in performance over time
• Eligibility for services and supports
• Functional independence in particular domains

These assessments provide an essential foundation for evidence-informed practice.

Without them, we would lose valuable information about a child's development and functioning.

However, they were never designed to explain everything.

A score can tell us what happened during an assessment.

It cannot always tell us why.

The Difference Between Ability and Access

One of the most important distinctions occupational therapists observe is the difference between a child's underlying abilities and their ability to access those abilities consistently.

Many parents describe situations like this:

"My child can do it one day but not the next."

"They can do it at home but not at school."

"The teacher says they're fine, but we don't see that at home."

"They did it during the assessment but never do it independently."

These experiences can be confusing.

They can also lead to assumptions that the child is choosing not to perform, lacks motivation, or is being inconsistent on purpose.

However, occupational therapists often see something different.

We see that performance is influenced not only by skill, but by access.

Why Performance Fluctuates

A child's performance is influenced by many factors, including:

• Regulation capacity
• Sensory processing demands
• Anxiety
• Fatigue
• Executive functioning
• Environmental expectations
• Social pressures
• Cognitive load
• Emotional wellbeing
• Physical health

A child may possess the underlying skill but struggle to access it when these factors increase demand on their nervous system.

For example:

A child may know how to write a paragraph.

However, after a noisy playground session, a difficult transition, poor sleep, or a stressful morning, accessing that same writing skill may become significantly harder.

The skill has not disappeared.

The accessibility of the skill has changed.

This distinction is critical.

The Challenge of Measuring Capacity

Current conversations within disability, health, and education systems increasingly focus on determining functional capacity.

This is understandable.

Funding bodies, service systems, schools, and families all need reliable ways to understand support needs.

The challenge is that capacity is rarely static.

Human performance fluctuates.

Every adult recognises this in themselves.

There are days when we are more productive, more organised, more patient, or better able to cope with challenges.

Children are no different.

The difference is that many children are still developing the regulation, executive functioning, communication, and coping skills needed to manage these fluctuations effectively.

As occupational therapists, we recognise that capacity exists within context.

Looking Beyond the Score

This is where occupational therapy offers a unique perspective.

While standardised assessments provide important information, occupational therapists also examine:

• What support was required?
• How much effort did the task require?
• Was performance sustainable?
• Can the skill be used across different environments?
• What barriers reduced participation?
• What environmental factors increased success?
• What happens when demands increase?
• How does regulation influence access to skills?

These questions help us understand not only what a child can do, but what makes participation possible.

Participation Is the Goal

Occupational therapy has always focused on participation.

Participation means engaging in the everyday occupations that matter to children and families.

This includes:

• Learning
• Playing
• Building relationships
• Developing independence
• Participating in family life
• Engaging in community activities

Participation depends on far more than isolated skill acquisition.

It depends on whether a child can access those skills in real-world environments.

A child who can demonstrate a skill in a quiet assessment room may still struggle to use that same skill in a busy classroom, a crowded playground, or a noisy family gathering.

Understanding this difference is central to effective intervention.

Why Regulation Matters

Over the past decade, neuroscience has increasingly highlighted the relationship between regulation and performance.

When a child feels overwhelmed, stressed, anxious, fatigued, or overloaded, access to higher-level skills may become less available.

This does not mean the child has lost those skills.

It means their nervous system may be prioritising safety, coping, and survival over learning, problem-solving, or participation.

This is one reason why occupational therapists are increasingly interested in understanding not only what a child can do, but the conditions that allow them to do it.

The Future of Capacity-Based Practice

As systems continue to evolve, standardised assessments will remain important.

They provide valuable information and support accountability, consistency, and evidence-based practice.

However, they should be viewed as one part of a much larger picture.

The future of paediatric occupational therapy lies not only in measuring performance, but in understanding participation.

Not only in identifying skills, but in understanding access.

Not only in documenting deficits, but in recognising the interaction between the child, the environment, the task, and the nervous system.

Because a score tells us something important.

But it does not always tell us the whole story.

And sometimes, the most important question is not:

"Can this child do it?"

But rather:

"Under what conditions can this child access their best capacity?"

That is where occupational therapy continues to provide unique value.

And that is why the story behind the score matters!