Candidates usually discover too late that aptitude tests are extremely repetitive. Graduate schemes, public-sector exams, security and transport roles, nursing entry — they all draw on the same repertoire, in some cases for decades. Someone who recognises a question’s family at first glance has already saved twenty or thirty seconds, and on a timed paper that gap decides the ranking.
Here are the seven families that come back, what each actually tests, and the reflex that saves time.
1. Number series
A run of numbers, one term missing. The most common format of all.
The reflex: work out the differences between consecutive terms first. Constant differences mean an arithmetic progression and you are done. If they are not constant, take the differences of the differences. If still nothing, try the ratios — divide each term by the one before — which exposes a geometric progression. Only after those three attempts should you consider the exotic options: two alternating rules, squares, Fibonacci.
The classic failure is not bad arithmetic. It is trying the candidate rules in the wrong order and burning a minute before attempting the simplest one.
2. Matrix and figure series
A grid of shapes with one cell blank. This is the format closest to what people mean by an IQ test, and the one that is meant to depend least on a candidate’s background.
The reflex: never look at the whole figure at once. Break it into attributes — shape, fill, rotation, number of elements, position — and track each one separately across the rows, then down the columns. In nearly every case each attribute follows its own simple rule, and it is their overlap that creates the impression of complexity.
3. Verbal analogies
“A is to B as C is to…” What is being tested is not vocabulary for its own sake but your ability to pin down the exact nature of the relation in the first pair.
The reflex that rescues this: say the relation out loud before you look at the options. “A goldsmith works gold” — craftsman to material. You are now looking for a material, not a finished product. Without that step you drift towards whichever option is most associated with the word, which is precisely the distractor the writer planted.
4. Logical reasoning with statements
“All A are B. No B is C. What follows?” Syllogisms, sometimes dressed up as short puzzles.
The reflex: draw it. Three circles that contain or exclude one another settle in ten seconds a problem that resists five minutes of reading. And watch the main trap: a conclusion can be true in the real world without following from the premises. The question asks what necessarily follows, not what sounds plausible.
5. Data interpretation
A table or chart, then questions about percentages, ratios and trends. Heavily used in finance, consulting and graduate schemes.
The reflex: read the question before you read the chart. Almost every chart contains far more information than any one question needs, and reading it exhaustively first is how candidates run out of time. Note the units and the footnotes — that is where the trap usually sits.
6. Error checking and attention
Counting occurrences, spotting differences between two lists, crossing out symbols. These measure no reasoning at all: they measure sustained vigilance under time pressure, which is a legitimate thing for an employer to care about in checking and safety roles.
The reflex: move at a constant pace rather than in bursts. Most errors arrive in the seconds following an acceleration.
7. Spatial reasoning
Rotations, reflections, folded cubes and nets. Common for engineering, trades and design roles.
The reflex: find one asymmetric feature on the figure and track only that. Trying to hold the whole shape in your head is what makes these feel impossible. And remember the governing fact: a shape that has been flipped can never be matched by rotation, however long you stare at it.
What this practice is worth — and what it is not
Practising these formats genuinely improves results, and it is entirely legitimate. The test is an obstacle to clear, not a measure of your worth. You prepare for it the way you prepare for any exam.
But be clear about what improves. You get better at these exercises. There is little evidence that your ability to reason in a genuinely new situation benefits, which is the problem with any programme promising a lasting, general boost in a few weeks.
To see where you stand before deciding what to practise, our full test covers four of these families and returns a profile by area — so you can direct the effort rather than revising at random.