Biases › Choice architecture
Choice architecture
Default effect / status quo bias
We tend to keep whatever is pre-chosen for us.
People tend to stick with whatever is preselected or already happening.
Johnson & Goldstein (2003), Do defaults save lives? Meta-analysis: Jachimowicz et al. (2019). Status quo: Samuelson & Zeckhauser (1988).
What is Default effect / status quo bias?
Default effect / status quo bias is a behavioural bias (choice architecture family): people tend to stick with whatever is preselected or already happening. Defaults carry effort, implied endorsement and inertia. Nudgeswipe rates the evidence as strong. Source: Johnson & Goldstein (2003), Do defaults save lives? Meta-analysis: Jachimowicz et al. (2019). Status quo: Samuelson & Zeckhauser (1988).
The original study
Johnson & Goldstein (2003), Do defaults save lives? Meta-analysis: Jachimowicz et al. (2019). Status quo: Samuelson & Zeckhauser (1988).
- Method
- Compared organ-donor consent across countries with opt-in vs opt-out defaults, plus an experiment that varied the default.
- What it found
- Consent was far higher where donation was the default.
Replications and critiques
- A meta-analysis of 58 default studies (pooled n = 73,675) found an average effect of d = 0.68 (95% CI 0.53–0.83), with substantial variation between studies; two studies found negative effects. Source →
The research
Defaults carry effort, implied endorsement and inertia. Auto-renewal is the same family: the status quo continues unless you act.
● Strong evidence
Also covers: Status quo bias (Samuelson & Zeckhauser (1988), Status quo bias in decision making. doi.org/10.1007/BF00055564)
Source: doi.org/10.1126/science.1091721 · doi.org/10.1017/bpp.2018.43
Key takeaways
- Honest nudge
Preselect the option that's best for most users, and make changing it easy.
Example: The Economist prices a year by the week, and preselects it → - Dark-pattern line
Preselected add-ons and silent renewals: deceptive.design 'preselection' and 'hidden subscription'. deceptive.design →
Use it
Apply this with your agent
The prompt carries this bias, its evidence rating and the honest-vs-dark line.
ChatGPT, Claude, Grok and Cursor open with the prompt filled in (it is also copied, in case the prefill doesn't load). Gemini and Codex don't support prefilled links, so the prompt is copied and the app opens; paste it in.
Frequently asked questions
What is Default effect / status quo bias?
Default effect / status quo bias is a behavioural bias: people tend to stick with whatever is preselected or already happening.
How does Default effect / status quo bias work?
Defaults carry effort, implied endorsement and inertia. Auto-renewal is the same family: the status quo continues unless you act.
How strong is the evidence for Default effect / status quo bias?
Nudgeswipe rates it strong evidence. Original source: Johnson & Goldstein (2003), Do defaults save lives? Meta-analysis: Jachimowicz et al. (2019). Status quo: Samuelson & Zeckhauser (1988).
How can you use Default effect / status quo bias honestly?
Preselect the option that's best for most users, and make changing it easy.
When does Default effect / status quo bias become a dark pattern?
Preselected add-ons and silent renewals: deceptive.design 'preselection' and 'hidden subscription'.
Which brands use Default effect / status quo bias?
Nudgeswipe has 11 teardowns of brands using it, including The Economist, Mailchimp, Spotify, Shopify, Monzo. Whether it lifted their results is not public unless a teardown cites it.
In the wild
11 real examples
The Economist prices a year by the week, and preselects it
The Economist · Pricing · $ as captured
Mailchimp preselects a free trial of its Standard plan
Mailchimp · Pricing · $ as captured
Spotify leads with "£0" and spells out the price after
Spotify · Pricing · £ as captured
Shopify makes starting cost $1 a month
Shopify · Pricing · $ as captured
Monzo sells budgeting as labelled Pots
Monzo · Homepage
Duolingo Super shows a three-step trial timeline
Duolingo · App onboarding / trial
Headspace preselects annual and shows it per month
Headspace · Pricing page · $ as captured
Dropbox badges its team plan "Best value" and defaults to yearly billing
Dropbox · Pricing page · $ as captured
BT states each future price rise in pounds next to the deal
BT · Broadband deals page · £ as captured
Peloton App: "Try 30 days free", then from £12.99 a month
Peloton · App page · £ as captured
Your free trial to Calm
Calm's trial email states the renewal date, price and how to cancel
Calm · Email · $ as captured
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