No information is provided as to how they were selected. Only six of the above group were chosen to provide interviews for the protocol analysis. Additional data was gathered for the second part of the study, which consisted of a protocol analysis of interviews with six of the subjects. There were no independent variables named in the study.
Reference is made to the intelligence levels of subjects, but no data is provided.
Rather, the four strategy types which emerged in the post-hoc analysis were used to group the frequency data. The remaining six hardly used it. The think-aloud protocol conducted as an interview confirmed the author's impression that individual differences play a role in the activation of certain strategies. No excerpts from the protocol are provided as an illustration. Several conclusions are drawn from this study.