
Change Signal The Environment Is Running the Show: Kristen Berman
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Feb 25, 2026 Kristen Berman, CEO and co-founder of Irrational Labs and behavioral scientist focused on behavior design, explains how environments shape decisions more than persuasion. She explores why vague goals fail and urges defining exact behaviors. Tiny details like defaults, timing, and visibility drive change. Practical tactics include adding or removing friction and designing immediate benefits to make new behaviors stick.
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Environment Drives Decisions Not Just Minds
- Behavior is shaped more by environment than by changing minds or beliefs.
- Kristen Berman shows placement, visibility, distance and social context (M&M example) change choices without altering preferences.
Define The Behavior Uncomfortably Specifically
- Start by defining the exact behavior you want and get uncomfortably specific about frequency and form.
- Use debate within your team as a test: if people argue the details, your definition is specific enough.
Use The Three Bs To Make Change Easier
- Make desired behaviors easier by removing friction and increasing immediate benefits.
- Use the three B's: pick a behavior, reduce barriers, and increase immediate benefits to encourage adoption.
