| Abstrakt: |
This paper proposes a technique to apply the protocol analysis method to usability testing. The “trouble analysis” method is offered for data analysis tasks. These techniques involve a procedure to improve time efficiency and convenience. As a criterion for data analysis, a “trouble model”, which consists of 22 trouble categories, is also offered. Most of the problems in a user-interface can be identified by extracting troubles from the verbal protocols using the model. In the trouble analysis technique, analyses of the human cognitive/thought processes, which usually requires expert knowledge and a lot of time, are not taken into consideration. Quick and easy detection of problems is first considered. The “trouble analysis” technique contributions to usability testing were empirically verified through 9 tests, employed on different kinds of products. The evaluation extent limitation, and user behavior during trouble situations, are also discussed. |
