INSIGHTS
Thinking
Notes on behavioral science, design thinking, and the kinds of product decisions they ought to inform.
RECENT WRITING
RESEARCH
What a 5,419-person trial just told us about which BCT actually moves behavior
A factorial RCT published April 2 tested six behavior change components on alcohol, diet, physical activity, and smoking. The winner is boring, and most product teams aren't shipping it.
April 18, 2026
FRAMEWORKS
How to actually build BCT 1.4 (action planning) into a digital product
Action planning is one of the most-used behavior change techniques in health apps. Most implementations are broken. Here's what the research says, and what a working version actually looks like.
April 18, 2026
FRAMEWORKS
COM-B in practice: a walkthrough with a real product
Most product teams treat COM-B as a training slide. Here's what it actually looks like when you apply it to one behavior, one product, one user.
April 15, 2026
BEHAVIOR CHANGE
Why people stop engaging in week two
Most health-tech products have a cliff around day 10. Here's what I've seen cause it, and why usability scores won't predict it.
April 14, 2026
INTRO
Welcome to Insights
What this blog is for, why I'm writing it, and the kinds of posts you'll see here. Short version: applied behavioral science for product teams who want rigor.
April 14, 2026