GLOSSARY

A research method in which representative participants attempt realistic tasks with an interface while researchers observe behaviour and gather feedback.

Testing exposes interaction barriers before they become expensive to fix, reduces design assumptions, and provides evidence for prioritising improvements that affect task success and conversion.

Five target users attempt to find, compare, and request a service quote on a prototype while a facilitator observes navigation failures and probes expectations without leading them.

Results depend on participant fit, task realism, facilitation, and analysis quality. Small qualitative studies identify issues but do not estimate population rates, and stated preferences should not replace observed behaviour.

A study defines target participants, tasks, success criteria, protocol, and the interface or prototype to test. Moderated or unmoderated sessions may produce qualitative findings, behavioural observations, and quantitative measures such as completion, time, errors, and satisfaction.