Free pattern recognition test

What pattern recognition is

The APA Dictionary defines pattern recognition as recognizing a complex whole made of, or hidden among, many separate elements (APA Dictionary: pattern recognition). On an intelligence test that usually means a series: a row of tiles that change in a regular way, where your job is to see the rule and say what comes next. For the theory behind the skill, see our page on pattern recognition. This page is where you test it and practice it.

Finding the rule in a series is a form of inductive reasoning, which the APA defines as drawing general principles from specific observations (APA Dictionary: inductive reasoning). Intelligence research treats inductive reasoning tests as markers of fluid intelligence, and induction is typically measured with series completion tasks found in many standard batteries (Loe et al., 2018). In a 2023 reanalysis of Woodcock-Johnson data, Kevin McGrew calls inductive reasoning the primary indicator of fluid reasoning (Gf) and of general intelligence (g); the Concept Formation test, a clear measure of induction, had the strongest Gf loading in that analysis (.54) (McGrew, 2023).

Series are one of the two most typical formats for testing inductive reasoning, alongside analogies (Primi et al., 2013). They have a long research history: Simon and Kotovsky introduced the rule schemes used to analyze letter series problems in 1963 (Loe et al., 2018). And the format does not need words or numbers. A 1994 statement signed by 52 researchers said that while there are different types of intelligence tests, they all measure the same intelligence, some using words or numbers and others using shapes or designs (Gottfredson, 1997).

What makes one person faster than another at these puzzles? Studies of matrix problems, a close relative of series, found that everyone used the same step-by-step strategy, and what separated higher from lower scorers was mainly the ability to induce abstract relations and to keep track of several problem-solving goals in working memory (Carpenter, Just & Shell, 1990). That matches what you feel on a hard sequence: each rule is easy alone, but holding three at once is the real test.

How pattern recognition is measured

Nonverbal and culture-reduced tests lean on series heavily. The Cattell Culture Fair test has four subtests (series, classification, matrices and conditions), and on Scale 2 the series subtest is 12 items in 3 minutes (Zahra et al., 2022). The TONI-4 has 60 abstract figural items per form, arranged from easy to hard, that vary on eight features (shape, position, direction, rotation, contiguity, shading, size and movement), with harder items combining more of them (PRO-ED: TONI-4). That is almost exactly how the sequences in this test get harder.

School ability tests use figure patterns too. The NNAT3 is a group-administered nonverbal test with 48 items in 30 minutes (Pearson: NNAT3), and the CogAT measures reasoning in verbal, quantitative and nonverbal domains (Riverside: CogAT Form 8). In clinical batteries, pattern-finding feeds the fluid reasoning score: the WAIS-5 Fluid Reasoning index uses Matrix Reasoning and Figure Weights (Pearson: WAIS-5 overview), and the Stanford-Binet 5 has a Fluid Reasoning factor (PRO-ED: SB5). Matrix tests such as Raven's are pattern recognition in two directions at once.

The ETS kit of reference tests measures an Induction factor with a Letter Sets Test, a Locations Test and Figure Classification (ETS: Kit of Factor-Referenced Cognitive Tests). Hiring tests use the same skill under other names: the PI Cognitive Assessment reports an Abstract Reasoning subscore (Predictive Index: Cognitive Assessment). The guide to types of IQ tests compares them.

The ten questions above are all shape sequences. The three easy ones use a single rule: a turn, an added shape, a size change or a cycling fill. The four medium ones combine two rules, and the three hard ones combine three: a turning arrow, a cycling fill and a dot moving around the edge.

Why does adding rules make an item so much harder? Research on matrix items, where the same logic has been studied in most detail, found that difficulty depends on both the type of rule, which taxes finding what corresponds to what, and the number of rules, which taxes keeping track of goals in working memory (Lozano, Embretson & Revuelta, 2025). One rule is a matter of noticing. Three rules is a matter of bookkeeping, and the method below is mostly bookkeeping.

Worked examples: easy, medium and hard

The easy example has one rule. Compare the first two tiles, name the difference, and check that the same difference takes you from the second tile to the third. Then apply it once more to the last tile.

The medium example runs two rules at the same time, one on size and one on fill. The fill rule is a cycle of three, so count where the last tile sits in the cycle rather than guessing from the most recent change.

The hard example stacks three rules: the arrow turns, the fill cycles and a small dot moves around the edge. Track each rule on its own, one at a time, and write down the answer to each before you look at the options.

Common mistakes on sequence puzzles

• Staring at the whole row. Waiting for the pattern to jump out wastes the clock. Compare neighbors in pairs and name each difference.
• Finding one rule and stopping. On medium and hard items, an option that gets the turn right but the fill wrong is there on purpose. Count the rules before you choose.
• Losing your place in a cycle. A fill that goes outline, solid, hatched repeats every three tiles. Count positions; do not assume the next fill is whatever came first.
• Misjudging the turn. A quarter turn counterclockwise sends an arrow pointing down to pointing right. Check the direction on two pairs of tiles, not one.
• Miscounting the dot's steps. On the hard items the dot jumps several places around the edge at each step. Count the jumps between two tiles and confirm the count on the next pair.
• Accepting a rule that fits two tiles but not the third. Test every guessed rule against the whole row before you trust it.
• Spending too long on one item. Each question has a 30-second ring. If you have two of three rules at about 20 seconds, choose the option that matches them.

A simple routine avoids most of these. Split the tile in your head into its parts: the main shape, its fill, its size or count, and anything small around the edge. Ask of each part, in turn, “does this change from tile to tile, and how?” Write the answer as a short note if it helps, such as “turns a quarter left, fill cycles, dot jumps three.” Then predict the missing tile before you look at the options, and pick the option that matches your prediction on every part. Looking at the options first invites you to pick whatever seems close.

How to practice pattern recognition

Inductive reasoning is one of the better-studied skills for training. A meta-analysis of 74 training experiments with nearly 3,600 children confirmed gains in both fluid intelligence and classroom learning, and the authors reported that the results cannot be explained by placebo or test-coaching effects (Klauer & Phye, 2008). As reported by a 2022 paper, the average corrected effect on intelligence tests was d = .52 (Pásztor et al., 2022). Rule learning even happens inside a single test: in one matrix study, items using certain rules got easier as people went along (Lozano, Embretson & Revuelta, 2025). A practice plan:

1. Start with one-rule items. The easy sequence puzzles each use one rule. Practice naming it in a few words.
2. Move to two rules. The medium sequences use two rules, usually a fill cycle plus a turn, a count or a size change. Solve each rule separately.
3. Add the third rule and the clock. The hard sequences add the moving dot. Give yourself 30 seconds each, the same as this test.
4. Check every answer. Each puzzle in the sequence library has a worked solution. Read it even when you got the item right, to see if the rule you used was the real one.
5. Learn the method once. The pattern recognition guide covers the full approach.
6. Widen the formats. Try the inductive reasoning test (sequences, matrices and odd one out) and the number sequence test, which uses the same thinking with numbers.

Be realistic about what changes. Retaking a cognitive test raises scores by about a quarter of a standard deviation on average, more when the same form is reused (Hausknecht et al., 2007), and a meta-analysis of retest studies found no further gains after the third sitting (Scharfen, Peters & Holling, 2018). Much of a quick rise on familiar puzzles is format knowledge. Reviews of cognitive training also conclude that far transfer, from a trained task to general ability, rarely occurs (Sala & Gobet, 2017). Practice makes you better at sequences; it does not prove your IQ went up.

Pattern recognition on the full IQ Octopus test

The full test has 25 items in five sections: Pattern Recognition (5), Abstract Reasoning (9), Spatial Reasoning (5), Quantitative Reasoning (3) and Logical Reasoning (3). The Pattern Recognition section uses shape sequences like the ones above, and the same rule-finding habit carries into the Abstract Reasoning matrices, the largest section. Every item is generated fresh for each attempt, so there is no answer key to memorize.

Your practice score is a count out of ten. IQ is a deviation score that compares you with people your own age on a scale with a mean of 100 and a standard deviation of 15 (Wikipedia: Intelligence quotient), and ten sequence items cannot place you on it. The full test scores all 25 answers with a Rasch model and reports an estimated IQ with a confidence range. Take the full IQ test to see yours.