A hypothesis is a testable statement that predicts the impact of a specific change on user behaviour or performance. In optimisation, hypotheses are used to guide experimentation and focus efforts on measurable outcomes.

A well-formed hypothesis links insight, change, and expected result.

Examples in Action

  • Predicting that simplified form fields will increase completion rate
  • Anticipating that clearer messaging will improve engagement
  • Testing whether trust signals reduce abandonment
  • Evaluating the impact of layout changes on progression

Typical Outcomes / Results

  • More focused and effective experimentation
  • Clear rationale behind testing decisions
  • Improved learning from both successful and unsuccessful tests
  • Better alignment between insights and outcomes

This glossary entry reflects common hypothesis usage in experimentation and optimisation.

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