For product managers

You need blueprints you could actually run: a real theory, a baseline, a sample size worked out in advance. Here's where to start.

Experiment

Does naming a savings pocket keep the money there?

Builds on Mental Accounting and Salience: does “Savings Pocket 2” becoming “Save for Phone” change how much of it gets spent?

Why it matters: one label change, designed as a real testable product experiment, not a redesign.

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Experiment

Does tradeoff transparency work between products, not just within one?

The real CBA result compared credit cards to each other. This blueprint asks whether it holds comparing credit to other ways to pay entirely.

Why it matters: the natural next test once a first result like this ships.

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Principle

Smart Defaults

Whatever option is pre-selected gets chosen far more often than the same option offered as an active choice, across almost every domain it's been tested in.

Why it matters: the default you ship is a decision you're making for users, whether you meant to or not.

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Special report

Every Default Decides Who Pays for Doing Nothing

A full map of the default spectrum: opt-in, opt-out, forced choice, and the newer designs sitting between them.

Why it matters: “just add a default” is actually several different product decisions with different tradeoffs.

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Experiment

Progress towards a home loan appointment

Tests whether showing customers how close they already are to booking increases completion.

Why it matters: a funnel-progress pattern you can adapt to any multi-step flow, not just home loans.

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