How to Build a Test Battery for Child Assessment

The most common error in a child assessment is administering everything available. It exhausts the child and produces overlapping data. A good battery consists of few instruments that complement one another, and every one of them can justify its place in a single sentence.

It starts with the referral question

The first step is not choosing a test; it is sharpening the question. "Please assess this child" is not a question. Workable ones look like this:

• "He cannot focus in class — is this an attention problem, or is he disengaging because he does not follow the material?"
• "Should she start school this year or wait one more?"
• "His handwriting is very poor — is there a visual-motor difficulty?"
• "She has no friends — is that social skill, anxiety, or behavioural control?"

Each question has its own small set of tools. Any test chosen before the question is settled produces data you will not know what to do with.

Three layers

A structure that works in practice has three layers.

Layer	Purpose	Typical tools
1. Broad screen	Map which domains are affected	SDQ, developmental checklists, classroom observation form
2. Focused measurement	Quantify the affected domain in depth	Burdon or D2, Benton, Peabody, Kent E.G.Y.
3. Context and affect	Relate the finding to the child's inner world and setting	CDI, sentence completion, projective drawing

Why order matters

Sequence is not arbitrary; fatigue and anxiety act directly on the result.

1. Open with something easy and familiar. The first session's job is rapport, not data. Drawing tasks make a good opening.
2. Put timed, demanding tests in the middle. An attention test belongs in the child's freshest stretch; left until last, it measures tiredness.
3. Close with open, qualitative tasks. Sentence completion and projective work are the least sensitive to fatigue.

Contradictions carry the clinical information

A battery earns its keep not where instruments agree but where they disagree. Three familiar patterns:

• Attention test normal, teacher report poor. Attention may hold in a quiet one-to-one room and break down in a stimulus-dense classroom. That points at environmental design rather than attention capacity.
• Receptive language sound, classroom performance weak. Comprehension is not the issue; motivation, anxiety or auditory attention should be considered.
• Visual-motor test low, daily living skills fine. Test anxiety, or a difficulty specific to pencil work, is the more likely reading.

These contradictions belong at the centre of the report, not buried in it. "Test A says this, observation B says that, and here is what the gap means" is worth far more than a column of scores.

Time and load

For a preschool child, more than 30 to 40 minutes of active testing in one sitting is unproductive. Long batteries should be split, and the split placed between two instruments rather than inside one. Observation forms fall outside this budget entirely — a teacher or parent completes them in their own time, which genuinely shortens the session.

A worked example: "cannot focus in class"

Take one of the most frequent referrals end to end, for a nine-year-old whose teacher reports inattention.

Step 1 — broad screen. First establish whether the difficulty is specific to attention or part of a wider behavioural picture. A behaviour screen plus a classroom observation form makes that distinction. If defiance, peer conflict and rule resistance dominate, that area is examined before any attention test.

Step 2 — focused measurement. If the screen points at attention, a timed measure follows. What is read is not one total but the balance of speed and accuracy, and how performance moves across the task.

Step 3 — differential questions. Inattention often has other sources: the child who disengages because the material is not understood, the child too anxious to settle, the child sleeping badly. A receptive language measure and an affect screen narrow these down.

Step 4 — synthesis. Three sources are laid on one page: test performance, teacher observation, family report. The conclusion comes from their intersection; anything resting on a single source is not reliable.

How many instruments is enough?

A practical rule: you should be able to write, in one sentence, the question each test answers. If you cannot, it does not belong in the battery. Most child assessments are complete with three to five tools. Beyond that you usually add noise rather than information, and fatigue starts eroding the reliability of whatever was administered last.

Three patterns to avoid in the report

1. A list of scores. Consecutive numbers tell the reader nothing on their own; each needs a sentence of context.
2. Over-generalisation. "There is an attention problem" is not actionable, because it does not say under which conditions or to what degree.
3. A conclusion without recommendations. The final section should answer the referral question directly and name a concrete next step.

When to re-assess

In developing children the picture changes quickly. The general approach is to re-measure the targeted domain three to six months after an intervention begins. Repeating the whole battery is unnecessary; measuring only what the intervention aimed at preserves time and makes change visible.

Related reading

For choosing tools by age, see which test and when. For a comparison of attention instruments, see Burdon and D2 compared.

Frequently asked questions

Should everything be administered in one session?

Usually not, in preschool and primary years. Once active testing passes 30 to 40 minutes, the data starts reflecting fatigue. Split between instruments, never inside one.

Can families see the test materials?

No. Materials are copyrighted, and prior exposure invalidates the result. What is shared with a family is the outcome and its interpretation, not the material.

What if two clinicians reach different conclusions?

Conditions of administration, the child's state on the day and the instruments used all vary. Results do not cancel each other out; they are read together and the difference is treated as information.

How many sessions should an assessment take?

Two or three is usually sufficient. A process that drags on erodes family motivation and makes the earliest data stale.

This article is for information only. The scales and tests mentioned here are screening and assessment instruments; on their own they do not establish a clinical diagnosis. Administration and interpretation belong to licensed professionals trained in the relevant instrument. Item texts, stimulus cards, and norm tables of copyrighted tests are never published on this page.