Memory & attention
How timing, memory and where we look quietly distort what we notice and believe.
What you remember is not what happened, and what you notice is not what matters — it is what was recent, vivid, or repeated. The peak-end rule shapes how you recall an experience; the mere-exposure effect makes the familiar feel true; the spotlight effect makes you feel watched. These are the biases of perception itself.
Key ideas here: Recency bias, Primacy effect, The peak-end rule, The Zeigarnik effect, The mere-exposure effect — and 7 more below.
Cognitive biases
Recency bias
Recency bias is the tendency to give the most recent events disproportionate weight in judgements and predictions — assuming what just happened will…
Primacy effect
The primacy effect is the tendency to remember and be most influenced by the first items in a sequence. First impressions, opening arguments, and the…
The peak-end rule
The peak-end rule is the finding that we judge an experience largely by how it felt at its most intense moment (the peak) and at its end — not by the…
The Zeigarnik effect
The Zeigarnik effect is the tendency to remember unfinished or interrupted tasks better than completed ones. Open loops nag at the mind — the…
The mere-exposure effect
The mere-exposure effect is the tendency to like things simply because they’re familiar. Repeated exposure — to a song, a face, a brand, an idea —…
Frequency illusion
The frequency illusion is the experience of noticing something everywhere right after you first encounter it — a word, a car model, an idea. The thing…
The spotlight effect
The spotlight effect is the tendency to overestimate how much others notice and judge you. We feel under a spotlight — our mistakes, our outfit, our…
Contrast effect
The contrast effect is when our judgement of something shifts depending on what we compare it to. The same option seems better or worse, bigger or…
The curse of knowledge
The curse of knowledge is the difficulty experts have imagining what it’s like not to know what they know. Once you understand something you can’t…
Hindsight bias
Hindsight bias is the tendency, after an event, to see it as having been predictable all along. Once you know the outcome, your memory reshapes your…
Availability cascade
An availability cascade is a self-reinforcing cycle in which an idea gains plausibility through sheer repetition in public discourse. The more often a…
Anchoring bias
Anchoring bias is the tendency to rely too heavily on the first piece of information encountered — the “anchor” — when making decisions. Later…
Related topics
The books behind better thinking
Listen to any of these free. Start a free Audible trial and get your first audiobook on the house.
Prefer to read? The canonical picks:
- Thinking, Fast and Slow — Daniel Kahneman
- The Art of Thinking Clearly — Rolf Dobelli
- The Great Mental Models, Volume 1 — Shane Parrish
- Poor Charlie’s Almanack — Charlie Munger
- Super Thinking — Gabriel Weinberg & Lauren McCann
- Seeking Wisdom — Peter Bevelin
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Editorial synthesis © ReadGlobe. Each idea links to a full reference page with sources.