What are abstract reasoning questions?

Abstract reasoning questions on the PI Cognitive Assessment use shapes, patterns, and visual transformations instead of words or numbers. They make up approximately one-third of the test - roughly 17 questions on a full 50-question test. No math, no vocabulary. Just visual pattern recognition.

These questions are the most unfamiliar for first-time test takers. That unfamiliarity is exactly why practice helps the most here. Once you know what to look for, abstract questions become predictable.

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Shape series

Shape series questions show you a sequence of frames where shapes change according to rules. Your job is to figure out what the next frame looks like.

What changes between frames:

• Position: A shape moves left, right, up, down, or diagonally
• Size: A shape grows or shrinks by a consistent amount
• Rotation: A shape rotates by a fixed angle (90 degrees, 45 degrees)
• Quantity: The number of shapes increases or decreases
• Shading: A shape alternates between filled, empty, or hatched

Strategy: Each shape in the frame follows its own independent rule. Don’t try to understand the whole frame at once. Track one shape at a time across all frames. Once you’ve identified its rule, move to the next shape.

For example, if you see a triangle that rotates 90 degrees clockwise each frame and a circle that grows larger each frame, those are two separate rules. The answer combines both rules applied one more step.

Most series questions have 2-3 shapes each following 1-2 rules. That’s 3-5 things to track total.

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Shape analogies

Shape analogy questions show you two images with a visual relationship, then ask you to apply the same transformation to a third image.

Common transformations:

• Rotation (the shape rotates 90 or 180 degrees)
• Reflection (the shape flips horizontally or vertically)
• Color inversion (filled becomes empty, empty becomes filled)
• Nesting (a small shape moves inside a larger one)
• Addition or removal (an element is added or taken away)

Strategy: Compare the first two images and name the transformation explicitly. “The shape rotated 90 degrees clockwise and the fill was inverted.” Then apply that exact transformation to the third image and find the matching answer option.

The mistake people make is looking at the answer options first. This creates visual noise. Identify the rule from the first pair, then look at the options.

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Common features (odd one out)

Common features questions show you two reference images that share a visual property. Four answer options are shown. Three of the four share that same property. One does not. Find the odd one out.

Properties to check:

• Number of sides (triangles vs. quadrilaterals)
• Curved vs. straight edges
• Symmetry (symmetrical vs. asymmetrical)
• Number of shapes in the image
• Shading pattern (filled, empty, striped)
• Orientation (all pointing same direction vs. one different)
• Enclosed vs. open shapes

Strategy: Look at the two reference images and ask “what do these have in common?” It’s usually one clear visual property. Then scan the four options - three will share that property and one won’t.

These are often the fastest abstract questions once you learn to identify the shared property quickly.

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Why abstract questions feel harder than they are

First-time test takers often spend 20-30 seconds on their first abstract question just understanding the format. By the fifth abstract question, they’re solving them in 10-12 seconds. The difficulty is almost entirely about familiarity, not complexity.

The patterns themselves follow simple rules - move, rotate, grow, change color. There are only so many things a shape can do. Once you’ve seen all the common transformations, new questions feel like variations of ones you’ve already solved.

This is where practice has the biggest payoff on the PI Cognitive Assessment. Research shows that the largest score improvements from practice come from abstract and spatial reasoning questions, precisely because the format is unfamiliar.

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Solving process for any abstract question

1. Identify the question type (series, analogy, or common features). This takes 1-2 seconds with practice.
2. For series: Track each shape independently across frames. Identify the rule for each shape.
3. For analogies: Name the transformation between the first pair. Apply it to the third image.
4. For common features: Find what the reference images share. Eliminate options that share it.
5. If nothing clicks in 12 seconds: Pick the answer that looks most different from the others and move on. Abstract questions reward quick pattern recognition - grinding on a hard one costs you easier points elsewhere.

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Quick reference

Subtype	What to look for	Time target
Series	Position, size, rotation, quantity, shading changes per frame	10-14 seconds
Analogies	Rotation, reflection, inversion, nesting between image pairs	8-12 seconds
Common features	Shared visual property between reference images	8-10 seconds

Abstract reasoning is the category where practice makes the most measurable difference. If you’ve never seen shape pattern questions before, take at least 2-3 practice tests before the real PI Cognitive Assessment. The format becomes intuitive quickly.