A reference record, a copy, and a clock. Say whether they match. Simple to describe, and the format where careless speed is punished hardest.
Free to start. Every item is generated fresh, marked with a full worked solution, and ranked on a 1–9 stanine band that recalibrates as more candidates practise.
2
scores: speed + accuracy
3 min
timed run
1–9
stanine rank
What it measures
Checking measures sustained attention to detail at speed. The comparisons are trivial in isolation; the test is whether your error rate stays flat as the pace rises and the records start to blur. Employers use it where a transposed digit has a real cost.
The format
Where marks are lost
Reading the copy instead of comparing it. Under pace the eye starts recognising the shape of a string rather than checking it character by character. The fix is mechanical: fix a scan order, keep it, and never let a familiar-looking record shorten it.
Why practise here
Speed and accuracy reported separately, so you can see which one is actually holding your score down
Mismatch types drawn from the ones that genuinely slip past — transpositions and single-character swaps
Short, repeatable runs so you can drill the scan discipline rather than the content
A stanine band on the combined measure, recalibrated as more candidates run it
Fresh records every run
Where you will meet it
Hiring stages where this format is commonly used. Persona Prep is not affiliated with SHL and does not reproduce their questions — we build practice in the same format, from our own generators.
With Persona Prep Pro
One subscription covers the whole assessment library, not just this exercise — because almost nobody is invited to sit only one module.
The full aptitude library
SHL Verify, Aon cut-e, Hogan and Saville formats — numerical, verbal, inductive, deductive, mechanical, checking and the interactive modules.
A rank, not just a score
Every run is placed on a 1–9 stanine band that recalibrates as the candidate pool grows, so you know your position.
A course per exercise
What it measures, the trap that costs marks, and worked items from every format — then the exercise itself.
Unlimited fresh items
Everything is generated, so you never run out and never memorise a bank.
Written + voice AI coach
Reads your results across exercises and tells you which two to fix first.
Personality practice too
SHL OPQ32, Hogan HPI/HDS/MVPI, Saville Wave, ADEPT-15 and 16PF, with full profile reports.
A checking test presents a source record and one or more copies and asks you to say whether they match. The comparisons are easy individually; the test measures whether your error rate stays flat as the pace increases over several minutes.
Speed and accuracy are reported separately, which is what makes the format unusual. Rushing produces a fast run with a poor accuracy figure, and over-caution produces a clean run with too few items. Both read badly. Our practice reports both so you can see which one is limiting you.
Fix a scan order — same direction, same field sequence, every record — and never shorten it because a record looks familiar. Most misses are transposed digits and single-character substitutions, which the eye skips when it starts recognising shapes instead of comparing characters.
SHL
Verify Numerical Reasoning
Timed data interpretation in the Verify format: a table or chart, one question, four options, and a clock that does not wait. Every item here is generated fresh and marked with a full worked solution.
Aon
cut-e (Aon) assessment battery
cut-e is not one test — it is a set of very short, very fast interactive modules, and each one punishes a different habit. Practise them the way they are actually served.
SHL
Mechanical Comprehension
Gear trains, belts, pulleys, levers and hydraulic rams — drawn properly, and answered with the ratio written out rather than guessed.
Playable sample questions, worked solutions, instant feedback.
What candidates commonly report facing, and which format to train.
All employers →