Misaligned traffic
Poor targeting can produce false negatives and false positives. Traffic fit is a first-order variable.
ADVANCED · 9 min read
Common Painted Door Test Failure Modes
The most frequent reasons Painted Door Tests fail and how to prevent them.
painted door test mistakesvalidation experiment failures
Undefined success criteria
If success is defined after results arrive, bias is almost guaranteed.
Execution inconsistency
Mismatched ad promise, listing context, and in-app flow can contaminate interpretation.
Frequently asked questions
What is the number one failure reason?
Ambiguous decision criteria and weak experiment design.
Can poor creative make a good idea look bad?
Yes. Creative and audience fit strongly influence early outcomes.