Log in or create a free Rosenverse account to watch this video.
Log in Create free account100s of community videos are available to free members. Conference talks are generally available to Gold members.
Get Your Whole Team Testing to Design for Impact
Summary
Experimentation can be intimidating to non-data science folk. But Erin wants to get everyone excited about A/B testing. In this talk, Erin shares the Conversion Design process. It centers A/B testing as a way to gather high-quality evidence to make highly informed decisions to improve your digital product. She also introduces the Good Experimental Design toolkit. These easy-to-follow templates usher teams through the logic needed to design trustworthy experiments that you can learn from.
Key Insights
-
•
Conversion design combines design, science, and business to intentionally create measurable improvements, not just arbitrary changes.
-
•
Ronald Fisher’s 1919 work exposed how poor experimental design led to decades of unreliable scientific data.
-
•
Conversion originates from the Latin word meaning to transform or change, which is broader than just sales or profit.
-
•
Traditional linear product development processes miss the complex, iterative nature of real-world systems.
-
•
Systems thinking offers a more accurate way to understand and manage design experiments within interconnected environments.
-
•
A rigorous conversion design process includes seven phases: understand, hypothesize, prioritize, create, test, analyze, and decide.
-
•
Experiments grounded in well-documented hypotheses based on research have higher success rates than guesses.
-
•
Randomized 50/50 AB testing is the gold standard for isolating the true effect of design changes by evenly distributing confounds.
-
•
Experimentation buckets—product foundations, content/motivation, accessibility/usability, and bug fixes—help prioritize work effectively.
-
•
Ethical considerations and guardrail metrics are crucial to ensure changes benefit all stakeholders sustainably and without manipulation.
Notable Quotes
"Conversion means change, not just sales or profit."
"Design is the rendering of intent — bringing ideas into form that solve the problem."
"Decades worth of agricultural experimental data was garbage because of poor experimental design."
"Most product teams stay on the bottom rungs of evidence, relying on opinions or observational data instead of randomized trials."
"You can never purely test an idea, only the implementation of the idea."
"Randomization is magic — it evenly distributes confounds so the observed effect is caused by your change."
"Not all changes create value; some do nothing or even make things worse."
"You have to think critically about how a change impacts all stakeholders, not just the main business metric."
"Ethics evolve faster than laws; just because something is legal doesn’t make it ethical."
"If an experiment I design made the front page news tomorrow, how would I feel about it?"
Or choose a question:
More Videos
"We use a holistic methodological approach combining explicit and implicit quantitative methods to fully get the user's perspective."
Daniela Magaña Flores Ariane Rahn Jeff Ephraim BanderAhead of Competition: Learn What UX Benchmarking Can Do for Your Business Today
March 10, 2022
"Yesterday was a prototype – we are continually redesigning around our users’ needs."
Tracy McGoldrickIBM User Experience Program—The What, Why and How
October 15, 2021
"If you want to take part in the gifs, laughs, jokes, questions, and links to resources, join us on #deogenerall Slack channel."
Bria AlexanderOpening Remarks
September 30, 2021
"We’re not trying to change behavior, but help researchers in their existing processes to make research faster."
Kate Towsey Basel Fakhoury Oren Friedman Graham GardnerParticipant Recruitment and Management Tools
March 12, 2026
"Preciousness around ‘pure’ design language can shut down collaboration with curious stakeholders."
Kevin BethuneGatekeepers and Servant Leadership
January 30, 2020
"The assistant asks open-ended questions that focus on what truly matters: performance, budget, and preferences."
Kritika YadavOptimizing AI Conversations: A Case Study on Personalized Shopping Assistance Frameworks
June 10, 2025
"Propose new IC roles like a design problem: identify the need, gather research, and try it as an experiment with retrospectives."
Catt Small Micah Bennett Brian Carr Jessica HarlleeWhat's Next for ICs: Exploring Staff and Principal Designer Roles
February 22, 2024
"The success of SLDS is not about the technology itself but about people and relationships."
Nalini P. KotamrajuAn Organizational Story: Salesforce Lightning Design System
June 9, 2016
"I want you to push yourselves to try one new approach, to challenge one of your assumptions, and to walk away ready to take an action."
Megan BlockerTheme 2 Intro
March 12, 2025