Dark patterns: interfaces that nudge you against your own interest

Dark patterns are deliberate design tricks that push you towards decisions you would not normally take, such as signing up for a subscription you cannot cancel easily. The key difference from bad usability is intent: a confusing button layout is poor design, but a hidden unsubscribe link that forces you to jump through hoops is a dark pattern. Think of it as a digital nudge that benefits the company, not you.

To spot a dark pattern in exam scenarios, look for three telltale signs: a hard-to-find opt-out, pre-ticked boxes that sign you up for extras, or a countdown timer that pressures you to buy. A quick way to eliminate the wrong answer is to ask: does this design make it easier for the user to do what they want, or harder? If it is harder, it is likely a dark pattern. Another trick: remember that dark patterns often involve a 'confirmshaming' message like 'No thanks, I do not want to save money'.

To test yourself, imagine you are booking a flight and the site adds travel insurance without asking. That is a dark pattern because it changes your choice without your free consent. A simple memory aid is the phrase 'trick, not mistake' – if the design tricks you into a choice you would not make freely, it is a dark pattern, not just a glitch.