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| Titel: |
Retrospective vs. concurrent think-aloud protocols: testing the usability of an online library catalogue |
| Auteur: |
Haak, Maaike van den De Jong, Menno Schellens, Peter Jan |
| Verschenen in: |
Behaviour & information technology |
| Paginering: | Jaargang 22 (2003) nr. 5 pagina's 339-351 |
| Jaar: |
2003-09 |
| Inhoud: |
Think-aloud protocols are a dominant method in usability testing. There is, however, only little empirical evidence on the actual validity of the method. This paper describes an experiment that compares concurrent and retrospective think-aloud protocols for a usability test of an online library catalogue. There were three points of comparison: usability problems detected, overall task performance, and participant experiences. Results show that concurrent and retrospective think-aloud protocols reveal comparable sets of usability problems, but that these problems come to light in different ways. In retrospective think-aloud protocols, more problems were detected by means of verbalisation, while in concurrent think-aloud protocols, more problems were detected by means of observation. Moreover, in the concurrent think-aloud protocols, the requirement to think aloud while working had a negative effect on the task performance. This raises questions about the reactivity of concurrent think-aloud protocols, especially in the case of high task complexity. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 7 van 7 gevonden artikelen
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