Pooling data from all survey years proved problematic because of changes in sample weight construction after 2007 and minor changes in the wording of smell and water clarity questions after 2004.
organised an empirical study to research the usability of the PBAF method in terms of memorability of questions, clarity of questions, syntactic variation and implementation of a traffic light system [7].
They were asked to judge the questions for appropriateness, clarity, completeness, question sequence, completion time and overall appearance.
Interviews with men checked their understanding of questions, the clarity of questions, and content suitability for the selected measures of behavioural outcomes and mediators of those outcomes.
The questionnaire was piloted to test usability, understanding, clarity and question flow; it included 29 questions and took approximately 20 min to complete.
These questions cover five main areas of content validity: (VQ1) relevance to training program objectives; (VQ2) cultural sensitivity; (VQ3) structural quality of test questions; (VQ4) written clarity of questions; and (VQ5) plausibility of provided options.
The results of the current research study suggest that memorability, clarity of questions, syntactic variation and question relevance can cause usability issues leading to authentication failure.
In one of those delicious moments of clarity, the question, "What did you expect?" came to mind.
Their suggestions and comments on clarity and question format informed revisions to the questionnaire.
We also began testing comprehension of draft items in the final third of the 81 participants by obtaining feedback about readability and clarity of question.
