Isolate one variable in short-form tests
If caption, sound, hashtags, and hook all differ, the result is unreadable. Use a variant spec sheet and lock the confounds people forget.
9 min read
'No clear winner' is a result
An inconclusive Test & Compare result is information, not a glitch. Why variants were too similar or impressions too thin, and what to change before you re-run.
9 min read
Peeking is why your creative tests lie
Early data favours whichever variant posted first and often reverses with volume. Pre-commit a sample size and a stop rule before you look.
8 min read
Test & Compare picks watch time, not CTR
YouTube Test & Compare crowns the variant with the highest watch time, not CTR. Why a winner can lose the click race and why Studio CTR is the wrong comparison.
9 min read
Three pairs minimum: beating feed variance
One paired short-form test is mostly feed lottery. Run three or more pairs in the same hook family and read the aggregate, not the lucky clip.
8 min read
What Test & Compare won't let you test
Shorts, Made for Kids, private, and age-restricted videos cannot run Test & Compare. The eligibility matrix, what stops a live test, and workarounds.
9 min read
Don't post two variants at the same time
Simultaneous organic variants share one audience pool, so neither result is clean. Post consecutive days at the same time, then cancel the weekday confound.
8 min read
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