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.
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
"The biggest stressor is when people know bad things are happening and nobody talks about them."
Alla WeinbergPeople Are Sick of Change: Psychological Safety is the Cure
July 20, 2023
"Our cohort facilitation sessions are one of the best parts of this conference."
Bria AlexanderOpening Remarks
June 10, 2021
"Confusing product portfolios often arise when two successful teams’ products overlap, complement, or have vague distinctions."
Jorge ArangoMeeting of the Waters: Designing for Successful Inorganic Growth
August 12, 2021
"Being badass means being vulnerable, standing up, being brave, and being true to yourself."
Megan KiersteadYou Are a Badass at UX: Overcoming Imposter Syndrome
March 10, 2021
"We can no longer rely on interviews, surveys, and usability tests to answer the strategic, complex questions organizations face today."
Jemma Ahmed Megan Blocker Eduardo OrtizRedefining the research toolkit: Expanding methodologies for a changing world
March 12, 2025
"Some of these talks might make people feel a little uncomfortable because we haven’t had these conversations before."
Saara Kamppari-MillerTheme Three Intro
September 9, 2022
"Don’t just run away from something. Make sure you are running towards something."
Renee ReidBecoming a ResearchH.E.R (Highly Enterprise Ready)
June 3, 2019
"Watch my lips and my body language if you’re starting to lose the timing on the word."
Dan WillisEnterprise Storytelling Sessions
June 8, 2017
"If you have somebody on your team for three years, for five years, that’s amazing from a longevity perspective given enterprise legacy and complexity."
Karen PascoeDeveloping Experience Teams and Talent in the Enterprise
June 8, 2016
