What are post task questions?
Post-task questionnaires: These measures are completed immediately after users finish a task and they capture their impressions of that task (e.g., Overall, this task was…?). A question is usually presented after the end of each task, which results in multiple answers collected within a session.
Why are post task questions asked after an experiment?
As the term suggests, the post-test questionnaire comes after the participant has completed all of the scenarios. This questionnaire is generally designed to allow the user to rate the overall experience. The questions typically map to the goals of the study.