→ Frameworks · 03 of 07
← Back to all frameworksCompletion Bias / Goal Gradient
Completion Bias and the Goal Gradient effect explained for onboarding design. Why people accelerate as they near a goal, and how to design progress that pulls users through. Primary sources, real examples.
Primary source
Hull, 1932 (Goal Gradient Hypothesis). Modernised for marketing by Ran Kivetz, Oleg Urminsky and Yuhuang Zheng, 2006 (Endowed Progress Effect). One of the most-replicated findings in product psychology.
What it is
People accelerate effort as they approach a goal. Even artificial progress (a coffee loyalty card pre-stamped with two free squares) increases completion rates substantially.
When to use it
Onboarding flows, multi-step forms, free-trial pacing, profile-completion mechanics, education sequences.
How I actually apply it
Most onboarding I rebuild gets a visible counter ('2 of 9') even if the steps don't strictly need pacing. The counter does more work than any single question on any single screen.
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