A concentration test measures how well you keep your attention on a simple, repetitive task, quickly and without mistakes. This guide explains how a dot-counting concentration test works, why sustained attention matters in safety-critical jobs, what the research says, and how to use the results well.

Why concentration matters at work

Train drivers, control room operators, plant operators, security staff and drivers of every kind spend long periods watching for signals that rarely appear: a signal aspect, an alarm, a reading that drifts out of range. Most of the time nothing happens. The job is to notice the one time it does.

Psychologists call this vigilance or sustained attention. Research going back to Mackworth's studies of radar operators in the 1940s shows that people's ability to detect rare signals drops over time on watch [1]. Later research by Warm, Parasuraman and Matthews showed that vigilance is hard mental work rather than a passive state, and that it can be tiring and stressful [2]. That is why many employers of safety-critical staff include a concentration test in selection.

How the Viewpoint Concentration Test works

The Viewpoint Concentration Test follows the tradition of cancellation tests such as the Bourdon test, adapted to work as a multiple-choice online test. It has 60 questions in 10 minutes. Each question shows six groups of dots, labelled A to F. Candidates tick every group that has exactly four dots, or tick "None" if no group does.

The test is speeded: most candidates are not expected to finish. That is deliberate. It means the result reflects how quickly and accurately someone can keep working on a demanding, repetitive task, rather than simply whether they can count to four. There are 5 untimed practice questions with feedback before the test starts.

A worked example

The following is a generic illustration written for this article, not an item from the Viewpoint test.

Six groups of dots contain, in order: A = 4, B = 5, C = 4, D = 3, E = 4, F = 5. The correct answer is to tick A, C and E. Ticking B or F (five dots) is a typical slip when working fast, and missing E is a typical slip when attention drifts towards the end of a row.

A helpful technique is to recognise four dots as a pattern rather than counting each one, in the same way you recognise the four on a dice. Most people find this both faster and more accurate.

Reading speed and accuracy

Results show both how many questions a candidate attempted and how accurate their answers were. These tell different stories:

• High speed and high accuracy suggests strong sustained attention.

• Lower speed but high accuracy suggests a careful style that may suit roles where mistakes are costly.

• High speed but lower accuracy suggests a candidate who may be trading care for pace, which is worth exploring at interview.

Scores are reported in bands from Very Low to Very High. As with every Viewpoint test, there is no pass mark: the result is one source of evidence for the employer's decision.

Using a concentration test well

For employers, a concentration test is most relevant where lapses of attention have serious consequences, including rail, transport, utilities, control rooms and security. Use it alongside tests of other relevant abilities, structured interviews and role-specific assessments. For high-stakes decisions based on unsupervised online results, consider a supervised re-test of shortlisted candidates.

For candidates, get a good night's sleep, choose a quiet place with no interruptions, and do the practice questions. During the test keep a steady rhythm. Don't worry if you don't finish, because most people don't.

See the Concentration Test page, our Dual Monitoring Test, or our guide to train driver assessment.

Frequently asked questions

How long does the Viewpoint Concentration Test take?

It has 60 questions with a time limit of 10 minutes, plus 5 untimed practice questions.

Do I need to finish the test?

No. The test is speeded and most candidates are not expected to finish.

What should I do if no group has four dots?

Tick "None".

Is this the same as a Bourdon test?

It follows the same principle of scanning and marking target patterns, adapted into a multiple-choice online format.

References

1. Mackworth, N. H. (1948). The breakdown of vigilance during prolonged visual search. Quarterly Journal of Experimental Psychology, 1(1), 6–21.
2. Warm, J. S., Parasuraman, R. & Matthews, G. (2008). Vigilance requires hard mental work and is stressful. Human Factors, 50(3), 433–441.