Psychological

Default Bias

What it is

Exploiting the human tendency to stick with pre-selected or status-quo options.

How it works

People overwhelmingly accept defaults because changing requires effort, and defaults carry an implicit endorsement — "this must be the recommended option." Those who set defaults wield enormous power over outcomes, as the majority of people never change them.

Real-world examples

  • •Software that pre-checks the box for marketing emails during signup.
  • •Organ donation rates that are dramatically higher in countries with opt-out versus opt-in systems.
  • •Phone manufacturers pre-installing their own apps as defaults, capturing massive market share.

Ethical guidelines

  • ●Set defaults that genuinely serve the user's best interest.
  • ●Make it easy — not just technically possible — to change defaults.
  • ●Do not bury default-changing options deep in menus or behind confusing language.

How to defend against it

  • ►Review all pre-selected options before accepting any setup or registration process.
  • ►Uncheck everything by default and only opt into what you genuinely want.
  • ►Remember that a default is a design decision by someone with their own interests.

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