Output details
11 - Computer Science and Informatics
University of Huddersfield
Reactivity effects of concurrent verbalisation during a graph comprehension task
<20> It is widely believed that that concurrent verbalisation (a 'think aloud' technique commonly used to understand cognitive processes underlying tasks) has no significant effect on the cognitive processes being studied. This paper challenges this assumption by presenting the first empirical study to identify concurrent verbalisation as a causal factor underlying changes in performance. The impact of this paper (which contributed to a successful PhD thesis) is significant as it not only calls into question the validity and reliability of results generated by verbal protocols but also advocates modifications to the theory of protocol generation which can account for reactivity effects.