Experiment Overview
Our team is working on an app that helps people lower their phone usage by slowly auto-distorting their screen as they approach their app time limits. Our team ran 3 assumption tests to verify important information for our project. These test cards display the most important assumptions our design depends on as well as the procedures we followed to test them:
More Experiment Design Details
You can read the story behind our original experiment design at the bottom of this blog post. Last week, we decided to go with alternative tests that better aligned with our assumptions. To see our updated experiment ideas, check out this document.
Recruitment Strategy
We aimed to recruit participants that matched our target audience: Stanford undergraduates with iPhones who wanted to reduce their smartphone usage. We refrained from re-using participants from our previous studies in order to center fresh perspectives. Instead, we tapped into other networks of ours or simply “snowballed” by asking former participants if they knew any other interested undergraduates.
Artifacts
For our experiments, we collected data quantifying participants’ tolerance levels for various screen time interventions/distortions in addition to screen time data. Check out these artifacts here.
Final Synthesis
We learned a lot from these experiments, and we combined our findings into the learning cards below.
