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Suffix Effect

The Suffix Effect is a memory bias where adding a meaningless sound or word at the end of a list makes it harder to recall the items just before it.

What should be remembered Discarding specifics for generalities

This occurs because the suffix acts as a distractor, disrupting the brain's ability to use the final item as a recall cue. For example, after hearing a list of words followed by a neutral sound like 'beep,' people struggle to remember the last few words. It demonstrates how memory relies on structural cues.

Would you catch it?

Recognising a definition is not the same skill as spotting it.

Two scenarios from the app, with distractors drawn from the same family of biases — which is what makes them hard.

Scenario 1Which bias?

During a sales pitch, the agent highlighted four product features, then a generic closing, and the client forgot the third feature.

Scenario 2Which bias?

After a podcast episode discussed three strategies, the host's closing joke made listeners forget the second strategy.

100+ more scenarios for this bias alone. 18,869 across all 188 — plus a log of which biases are yours.
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Biases rarely arrive alone.

Understand more. Assume less.

188 biases, 18,869 scenarios, and a record of how you actually decide.

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