In Files are anonymized data from pretest (pretest.txt), entry questionnaire (pre.txt), exercise (main.txt), and three post-exercise questionnaires (post1.txt - post3.txt). File data.txt contains all questionnaire data for the 172 participants that were included in analysis of the primary hypothesis.
Since things listed by participants contained potentially sensitive information and could have been used for identifying the participants, the actual things listed are not in the data. Instead, the items have values "", "invalid", and "NULL" when an item was provided and valid, was provided, but was not coded as a valid positive thing, and was not provided, respectively.