Alexander Pass-Along Test (APT)

The Alexander Pass-Along Test is a performance test of practical intelligence, in which a person slides coloured blocks within a frame to reach a target arrangement. This page explains what it measures, what happens during the assessment, and what the results do and do not tell you, whether you have been given the test yourself or someone in your family has been referred for one.

What it is

The Alexander Pass-Along Test is a performance, or nonverbal, intelligence test developed by the British psychologist W. P. Alexander in the early 1930s. The person is given a frame holding coloured blocks and asked to move them, by sliding rather than lifting, until they reach a target arrangement. Because the task can be demonstrated rather than explained, it depends very little on language.

It is designed to sample practical and spatial problem-solving: working out a route from a starting position to a goal, planning a sequence of moves, and adjusting when a path is blocked. It sits within the tradition of performance tests built to estimate reasoning without relying on words.

What it covers

If this test was given to you or your child

If you or someone in your family has been referred for the Alexander Pass-Along Test, this is what the session looks like. You sit with a psychologist, one to one, and are given a frame holding coloured blocks. For each problem, the task is to slide the blocks around, without lifting them out, until they match a target arrangement. The problems start easy and get gradually harder, which is by design and not a sign that anything has gone wrong.

There is almost no reading, writing or talking involved, because the test was built that way on purpose. Someone with little formal schooling, or who is more comfortable in a language other than the examiner's, is not marked down for it. It usually takes somewhere between fifteen and thirty minutes.

Some problems are timed, which is part of how the test works rather than a sign of being rushed. Most people find it more like a puzzle than an exam, though the harder problems can feel frustrating, which is expected.

Reading the results

A report gives an estimate of practical ability based on how successfully and how quickly the arrangements were reached. Because the task is hands-on rather than verbal, the result describes spatial and practical problem-solving, not vocabulary, general knowledge or reading.

That makes it useful in a specific way and limited in another. A good result here says something real about planning and practical reasoning. It does not tell you how someone will manage a heavily language-based school subject or job, and a careful psychologist will say which question was being asked and will often use a second test alongside it.

Every psychological test has a margin of error, so a careful report gives a band and a description rather than treating a single number as exact. The figure reflects how the person did on these particular problems, on this particular day, compared with others of a similar age.

What it cannot tell you

It does not diagnose anything on its own. It is one measure of one kind of ability, taken on one day, and a diagnosis of intellectual disability, a learning difficulty, autism or ADHD is made by a qualified clinician who puts the score together with history, day-to-day functioning and other assessment.

Because parts of it are timed, it is sensitive to things that have nothing to do with ability. Someone who is shy with the examiner, tired, unwell, anxious, or careful rather than fast will take longer. It does not measure memory for everyday life, language, emotional wellbeing, motivation or how someone copes under pressure.

And it does not measure potential. A low score on a difficult afternoon is a snapshot, not a ceiling. If the person was unwell, exhausted or unfamiliar with the examiner, say so, because it belongs in how the result is read.

Who can administer it in India

The Alexander Pass-Along Test is administered and interpreted by a psychologist or examiner trained in its use, working from the manual and the physical apparatus. Timing and the handling of the blocks are part of the standardisation, which is why it cannot be done informally or from a description online.

For clinical purposes in India, and for anything feeding into certification, this generally means a professional registered with the Rehabilitation Council of India, the statutory body that regulates who may deliver such assessments. If you are unsure who assessed you or your relative, or under whose supervision, it is reasonable to ask.

Where to get assessed

Assessment is carried out in both government and private settings. The psychology departments of government medical colleges and district hospitals, and District Early Intervention Centres, provide assessment at low or no cost, though waiting times vary considerably by district. Private clinics and hospitals are usually quicker and charge a fee that varies by city and setting.

Because the Alexander Pass-Along Test is usually administered as one part of the Bhatia Battery or a wider assessment rather than on its own, it helps to ask what the full assessment will cover. If the result is needed for disability certification or a school accommodation, check which route the receiving authority accepts before you book, since a report from the wrong setting can mean repeating the whole thing.

Who it is for

It is used with children and adults where a language-reduced measure of practical problem-solving is helpful. That includes people with limited schooling or literacy, a language difference with the examiner, or hearing and speech difficulties, for whom a heavily verbal test would give a misleading picture.

It is administered individually by a trained psychologist or examiner, following a standardised order and timing. It is not a group test, and it cannot be done reliably from a written description.

For clinicians

How it is administered

The examiner presents the frame and coloured blocks, demonstrates what is wanted, and then asks the person to reach the target arrangement by sliding the blocks. The problems are ordered so that they become gradually harder, and both success and the time taken are recorded.

Performance is compared with the test's norms to give an estimate of practical ability. The apparatus and manual are obtained through a publisher or supplier, and the specific arrangements and scoring are not circulated openly, because exposure to them would make a later assessment meaningless.

Use in India

In India the Alexander Pass-Along Test is best known as one of the subtests of Bhatia's Battery of Performance Tests of Intelligence, the non-verbal battery standardised by C.M. Bhatia in 1955, and it is widely taught and used in that form. It is valued because it lets a clinician estimate reasoning for someone whose schooling, first language or hearing would make a verbal test unfair, which matters in a country with such wide variation in all three.

Because it appears on the syllabus of most Indian psychology degrees, many people who look it up are students revising the Bhatia Battery as much as families of someone being assessed. As with other older tests, clinicians take the age of the norms into account when reading a score.

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Citation and sources

Alexander, W.P. (1935). Intelligence, Concrete and Abstract: A Study in Differential Traits. British Journal of Psychology Monograph Supplements.

• Pass-along test (definition) — APA Dictionary of Psychology

This page is general educational information for professionals, not clinical or legal advice, and not a substitute for training in the instrument. ElloMind does not provide, sell or reproduce copyrighted test materials.