Implementation intentions

Planning exactly when, where and how we'll act makes us more likely to follow through.

Gollwitzer (1999), Implementation intentions: Strong effects of simple plans.

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What is Implementation intentions?

Implementation intentions is a behavioural design principle (technique family): planning exactly when, where and how we'll act makes us more likely to follow through. "When do you want to practise?" schedulers and calendar prompts. Nudgeswipe rates the evidence as strong. Source: Gollwitzer (1999), Implementation intentions: Strong effects of simple plans.

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The research

"When do you want to practise?" schedulers and calendar prompts.

● Strong evidence (provisional)

Provisional rating: we cite only the original paper so far. It stays provisional until a replication or meta-analysis is added.

This is a technique, not a bias. It relies on Commitment & consistency.

Source: doi.org/10.1037/0003-066X.54.7.493

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Key takeaways

Honest nudge
Help people make specific plans for things they want to do.
Dark-pattern line
Pushing plans for goals the user hasn't chosen.

Use it

Apply this with your agent

The prompt carries this bias, its evidence rating and the honest-vs-dark line.

You are helping me apply a behavioural bias ethically in my product.

Bias: Implementation intentions (Technique, strong evidence): Planning exactly when, where and how we'll act makes us more likely to follow through.
How it works: "When do you want to practise?" schedulers and calendar prompts.
Source: Gollwitzer (1999), Implementation intentions: Strong effects of simple plans. https://doi.org/10.1037/0003-066X.54.7.493
Honest use: Help people make specific plans for things they want to do.
Dark-pattern line: Pushing plans for goals the user hasn't chosen.
Page: https://nudgeswipe.com/biases/implementation-intentions/ (JSON: https://nudgeswipe.com/api/biases/implementation-intentions.json)

Rules: say a brand "uses" a tactic, never that it "worked"; outcomes are not public unless the company published them; no invented uplift estimates; flag mixed evidence. Honest nudge = true, visible, easy to reverse, and in the user's interest. Dark pattern = hides costs, fakes scarcity or popularity, shames, or makes leaving harder than joining. Quote company-published results as "X reports", with the source link, and don’t generalise them. Don’t cite retracted or failed-to-replicate studies as support (e.g. Ariely & Wertenbroch 2002). Don’t state study figures unless they’re on this page or in a source you can link. If an idea crosses the line, link the matching deceptive.design pattern.

Tasks:
1. Ask me for my product, the flow and the goal.
2. Audit where implementation intentions already shapes that flow, for better or worse.
3. Propose 2-3 ethical experiments: hypothesis, variant, primary metric, guardrail metric.
4. Flag dark-pattern risks. The rating is provisional: no replication or meta-analysis is cited yet.

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Frequently asked questions

What is Implementation intentions?

Implementation intentions is a behavioural design principle: planning exactly when, where and how we'll act makes us more likely to follow through.

How does Implementation intentions work?

"When do you want to practise?" schedulers and calendar prompts.

How strong is the evidence for Implementation intentions?

Nudgeswipe rates it strong evidence (provisional). Original source: Gollwitzer (1999), Implementation intentions: Strong effects of simple plans.

How can you use Implementation intentions honestly?

Help people make specific plans for things they want to do.

When does Implementation intentions become a dark pattern?

Pushing plans for goals the user hasn't chosen.

In the wild

No teardown yet

We haven't captured a real product or email using implementation intentions yet. Seen one? Use the prompt above to audit your own flow, or browse all teardowns.

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