⏰ Act within a given time: The Psychology of UX Design

Users are busy so they look for shortcuts and jump to conclusions quickly.

Name One-Liner Category
1 🗓 Fresh Start Effect Users are more likely to take action if there's a feeling of new beginnings Time
2 ⚒️ Labor Illusion People value things more when they see the work behind them Time
3 ⚖️ Default Bias Users tend not to change an established behavior Time
4 🏦 Investment Loops When users invest themselves, they're more likely to come back Time
5 🕯 Loss Aversion People prefer to avoid losses more than earning equivalent gains Time
6 👞 Commitment & Consistency Users tend to be consistent with their previous actions Time
7 🏝 Sunk Cost Effect Users are reluctant to pull out of something they're invested in Time
8 🌛 Decision Fatigue Making a lot of decisions lowers users' ability to make rational ones Time
9 🌋 Reactance Users are less likely to adopt a behavior when they feel forced Time
10 🥽 Observer-Expectancy Effect When researchers' biases influence the participants of an experiment Time
11 🌱 Weber's Law Users adapt better to small incremental changes Time
12 🔨 Law of the Instrument If all you have is a hammer, everything looks like a nail Time
13 🍭 Temptation Bundling Hard tasks are less scary when coupled with something users desire Time
14 🎈 Parkinson’s Law The time required to complete a task will take as much time as allowed Time
15 🎩 Dunning-Kruger Effect People tend to overestimate their skills when they don't know much Time
16 🌤 Affect Heuristic People's current emotions cloud and influence their judgment Time
17 📉 Hyperbolic Discounting People tend to prioritize immediate benefits over bigger future gains Time
18 💳 Cashless Effect People spend more when they can't actually see the money Time
19 ⌚️ Chronoception People's perception of time is subjective Time
20 🌚 Self-serving bias People take credit for positive events and blame others if negative Time
21 🥬 Pareto Principle Roughly 80% of the effects come from 20% of the causes Time
22 🧠 Doherty Threshold Users feel more engaged when system responses are under 400ms Time

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Last updated: 2026-10-20

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