![]() Our evaluation also compares problems identified using undo and erase events to problems identified using the user-reported critical incident technique. ![]() ![]() This research evaluates the use of undo and erase events as indicators of critical incidents in Google SketchUp (a 3D-modeling application), measuring an indicator’s usefulness by the numbers and types of usability problems discovered. One approach to reduce the costs of usability testing is to facilitate the automatic detection of critical incidents: serious breakdowns in interaction that stand out during software use.
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