CRO Glossary
Above-the-Fold vs Below-the-Fold Testing Cadence
The practice of sequencing which page zones get tested first, based on visibility and expected impact.
Testing cadence refers to the order and pace at which a team runs experiments across different parts of a page or funnel. Because attention and traffic drop off sharply as users scroll, many teams deliberately front-load their test roadmap with above-the-fold elements — headlines, hero CTAs, primary value props — before moving to lower-impact, lower-visibility areas further down the page.
This isn't just a scheduling preference; it's a resourcing decision. Every test consumes traffic, time, and analyst attention, and elements seen by 100% of visitors have a structurally higher ceiling for impact than elements seen by 20% of visitors who scroll that far. A well-run program treats cadence as a prioritization framework, not just a queue.
For example, an e-commerce team might run three consecutive above-the-fold tests (hero image, headline, CTA copy) in a quarter before touching the below-the-fold trust badges or FAQ accordion, because early results suggested the fold area was driving most of the funnel drop-off.
The risk of ignoring cadence is diluting a limited testing budget across low-leverage areas, or running a below-the-fold test that never reaches significance because too few users scroll far enough to be exposed to the variant at all.
Related terms
Above vs Below Median Split
A segmentation technique that divides users into two groups at the median of a metric to compare high and low engagers.
Qualitative Feedback Loop
A recurring process of collecting and acting on user comments, session recordings, and survey responses to inform test hypotheses.
Experiment Metadata
The structured record of who, what, when, and how for a test — hypothesis, owner, dates, variants, and metrics used to track and audit it.
Pre-Test Analysis
The upfront work of validating traffic, metrics, and baseline data quality before launching an experiment.
Above-the-Fold vs Below-the-Fold Messaging Hierarchy
How the order and prominence of value-proposition messaging is split between the visible screen and the rest of the page.
Experiment Contamination
When a control or variant group is unintentionally exposed to the other condition, corrupting the comparison.
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