Pattern families: how to stop treating every question as new

By Pratham Ranjan·8 min read·

Seven pattern families — rotation, count, shading inversion, movement, layering, symmetry, and alternation — cover most logical reasoning questions. Classify the family first, then test one hypothesis. This turns a reasoning problem into a recognition problem.

TL;DRthe 30-second version
  • Most abstract reasoning questions are variations of the same small rule families.
  • The fastest route is family first, exact rule second.
  • If your first hypothesis fails on one frame, drop it immediately.
  • Count, movement and alternation are the three families candidates miss most often under time pressure.

Logical reasoning becomes easy when you stop seeing “random shapes” and start seeing pattern families. Seven families cover most of what you will see on a test: for the broader method, use the logical reasoning guide; for visual sequence drills, read abstract reasoning patterns.

  1. Rotation
  2. Count (objects, sides, intersections)
  3. Shading inversion
  4. Movement on a grid
  5. Layering (two shapes combine or separate)
  6. Symmetry changes
  7. Alternation (A-B-A-B)
How to use this list under time pressure
Do not search for “the rule” first. Classify the family in five seconds, then test one hypothesis. If it fails across any item, discard and pick the next most likely family. Never hold two hypotheses at once.

Pattern recognition gets faster only when you classify under a timer. Open logical reasoning practice

The seven families at a glance

FamilyWhat changesFast test
RotationA shape turns by a fixed angle.Track one distinctive corner or marker.
CountThe number of objects, sides, dots or intersections changes.Count the boring feature before the obvious one.
Shading inversionBlack becomes white, filled becomes empty, or shading cycles.Compare the same position across frames.
MovementAn object moves around a grid or along a path.Ignore shape type and track location first.
LayeringTwo shapes combine, overlap, cancel or split.Ask whether frame three is made from frames one and two.
SymmetryThe figure mirrors, flips or changes axis.Check vertical symmetry before diagonal symmetry.
AlternationTwo rules take turns: A-B-A-B.Compare odd frames with odd frames, even with even.

Why this works

Your brain is slow at holding abstract rules but fast at recognising categories. Forcing yourself to name the family first turns a reasoning problem into a recognition problem — and recognition is the thing time pressure stops killing you on.

Worked example: do not solve too early

Imagine a sequence where a triangle appears in the top-left corner, then top-right, then bottom-right. At the same time, the triangle alternates filled, empty, filled. A rushed candidate may see the shading first and assume the whole rule is shading. The better move is to name both families: movement plus alternation.

That changes the answer search. You now need the triangle in the bottom-left corner, and the shading should switch back to empty. If an option has the right shading but the wrong corner, reject it. If it has the right corner but the wrong shading, reject it. The family label stops you from over-weighting the first pattern you noticed.

The order to check families

In a timed test, do not scan randomly. Start with the easiest families to verify and move to the more abstract ones only if the simple checks fail.

  1. Position: is anything moving around a grid?
  2. Count: are dots, sides, lines or intersections increasing or decreasing?
  3. Shading: does filled/empty/black/white alternate?
  4. Rotation or reflection: is the same object turning or flipping?
  5. Combination: are two frames being added, subtracted or layered?
The common trap
The first visible change is not always the rule. Test whether it predicts every frame. If it only explains half the sequence, you have found a partial rule, not the answer.

A 3-minute drill

Pick any logical reasoning set. Before solving, just classify the family for each question out loud. Do not solve — just classify. Do 20 in a row. You will feel the recognition get faster within one sitting.

How to review missed pattern questions

Do not write “missed the rule” in your error log. That is too vague to help. Label the miss by family: missed count, missed movement, missed alternation, or held a dead hypothesis too long. After ten misses, the pattern is usually obvious. Most candidates are not bad at all logical reasoning; they are bad at two families. If your invite names SHL specifically, move from this page to SHL inductive reasoning.

Source notes

forge checks pattern-family guidance against provider descriptions such as SHL’s cognitive assessments overview and Aon’s online assessment preparation page.

Drill pattern families on forge

Logical reasoning sets grouped by family so you can train classification speed first, then rule application.

See what forge offers

Frequently asked questions

What are pattern families in logical reasoning?+

Pattern families are recurring rule types such as rotation, count, shading, movement, layering, symmetry and alternation.

Why classify the family before solving?+

The family narrows the possible rules. Once you know it is a movement or count problem, you stop wasting time testing unrelated hypotheses.

What should I write in my review notes?+

Write the missed family and the failed habit, such as missed count, missed movement, ignored alternation or held a dead hypothesis too long.

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