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# How to perform a qoc analysis

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Presentation explaining the QOC method for selecting ideas

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### How to perform a qoc analysis

1. 1. 1<br />How to perform a QOC Analysis? <br />
2. 2. <ul><li>Questions
3. 3. Options
4. 4. Criteria</li></ul>It is a method for selecting design options<br />QOC stands for<br />
5. 5. Decompose your problem into important interaction problems. <br />Reformulate each interaction problem so that it forms a question (How can … ?)<br />Step 1: Questions<br />for example: <br /> How can the interface of our online community allow users to gain status? <br />
6. 6. Formulate the options that you found or create new options for the questions that you formulated.<br />Step 2: Options<br />for example:<br />(question was: How can the interface of our online community allow users to gain status? )<br />-Other users could vote for contributions<br />-This will happen implicitly, we do not need to provide the option<br />-One user will be put ‘in the spotlight’ on the front page<br />
7. 7. Decide on criteria, on which you would like to judge the options. <br />Designing Criteria Is difficult<br />Objective (at least it should be possible to agree on the application of a criterion)<br />Specific (makes scoring easier)<br />Selective (if all options score the same the criterion is not so useful)<br />Non-overlapping (if options score the same on multiple criteria you need less. <br />Classic usability criteria are: learnability, efficiency, effectiveness, user satisfaction. Not all criteria need to be of the same weight, you can use weights in deciding for ideas.<br />Classic sociability criteria are: Trust and Security, Governance, Accessibility, Effective Communication<br />Step 3: Criteria<br />
8. 8. See next slide: Each group member gives each option a score for each criterion.<br />Scores can be: +1 (fits), 0 or -1 (doesn’t fit)<br />Scores for all criteria are added. <br />Criteria can be weighted if needed<br />Step 4: Rating<br />
9. 9. 7<br />QOC Analysis - Score table<br />
10. 10. If a criterion doesn’t differentiate, consider revising<br />If scores are controversial (wide raging consider revising)<br />Some ‘noise’ is expected on scores.<br />If ‘winner’ has 45 and runner up 30 there is a true winner<br />If ‘winner’ has 45 and runner up 41 the outcome is undecided (even replacing one group member would lead to a different score)<br />Step 5: Interpretation<br />
11. 11. There is a clear rationale for selecting the idea. <br />You are more certain your included all information in your decision process<br />Decision taking can be traced back later on in the process<br />‘Emotional’ arguments and ‘gut’ feeling are not well represented in QOC, but they are nevertheless important<br />QOC Analysis Conclusions<br />
12. 12. Questions, Options, and Criteria: Elementsof Design Space Analysis<br />Allan MacLean, Richard M. Young, Victoria M., E. Bellotti, Thomas P. Moran<br />HUMAN-COMPUTER INTERACTION, 1991, Volume 6, pp. 201-250. Copyright O 1991, Lawrence Erlbaum Associates, Inc.<br />Online Version<br />This presentation is (loosely) based on<br />