This week’s class was about cognitive walk-though and focus groups. We had three readings, two of them focusing on cognitive walk-through and one was on focus groups. In the first paper on cognitive walk-through, to answer the three questions during walk-through is perhaps the most important part. The three questions in that article are
1. Will the user know what to do to achieve the task?
2. Will the user notice that the correct action is available?
3. Will users know from the feedback that they have made a correct or incorrect choice of action?
It illustrated where it is best suited when comparing to heuristics. It’s particularly helpful in specific part of a project where it’s more complex. The second paper on cognitive walk-through tried to optimize Wharton’s cognitive walk-through with some trade off. It reduced the questions to ask and addressed the social constraints that need to be considered. It was interesting that one student in the class felt it can be best used in agile methodology and more importantly at initial analysis to get a quick insight. The third paper that was on focus groups discussed right from what is a focus group, how to recruit a focus group, what factors to consider during the recruitment process, how the focus group’s discussion needs to be conducted, what is the role of a focus group moderator and the article illustrated few examples as well.
Then in the class, each of the 4 teams came up with their questions on the articles. Only two teams drew a cat. By the way, today is November 1; it is Hello Kitty’s birthday. Happy Birthday Hello Kitty!
Then each student picked their question to answer from all the questions that all the teams came up with. I picked to answer – how in-depth should cognitive walk-through be. I think it should answer the three questions listed above and satisfy the social constraints. In case one needs to quantify it, it needs to consider minimum of N log N cases to analyze and maximum of N*N cases. N is the number of components in the design under analysis. N*N means taking each component with every other component and analyzing it. I think these big O notations’ equation used in sorting can be applied for CW analysis as well.
Then each team questioned another team as part of focus group. The topic was to improve CGT website for MS applicants. We were questioned by one team and then we questioned another team in the class. We then emailed our team report to instructor.