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Published byMartin Mosley Modified over 9 years ago
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Housekeeping Seminar Topics doodle poll on facebook page – sign up by tomorrow night (Fri) please, and I’ll make the schedule this weekend Option to propose a novel topic. One slot on the last day – I may free up another couple on other days depending on interest levels Post-mortem of 1 st MP1 Protocol testing Preparation Volunteers Those rating sheets Critiques
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Agenda Today: Finish off contextual interviews Diary Studies Discussion of diary studies reading (assigned for Tues) Questionnaire handout (start in class – complete for Tuesday) Next Tuesday: Finish off Questionnaires, Methodology Matters
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Contextual inquiry Interviewees are interviewed in their context, when doing their tasks, with as little interference from the interviewer as possible. Allows probing of “why?” Can be real-time or record interesting actions for later discussion
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“Typical” 4 phased approach Traditional interview Get an overview, establish trust, start recording Switch to a master-apprentice relationship Tell them what you want to observe Make sure to establish when ok to interrupt Observe, ask questions Take notes Balance need to understand with impact of interruptions Summarization Go over observations and your understanding with participant Make sure that you go it right
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Other ways of providing context If natural observation not possible, can ask them to demonstrate specific tasks of interest Can provide task scenarios and ask them to perform “Think aloud” aloud protocols
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Other ways of getting observational data Logging Screen recording (check out Camtasia) Trace data
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CSCI 4163/6610, Winter 2014
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Advertising Diary Did you remember to fill it out? When did you do it? As encountered? In a batch? Were the instructions clear? What was easy/hard about it? Do you think it captured your exposure to advertising?
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Diary studies… Participants collect data about events As they happen In the context of the event (in situ) Can think of like a small, longitudinal questionnaire Often used to prompt interview discussion (similar to observations in a contextual inquiry) Can help understand rare/infrequent events
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Data collection methods Survey style forms Paper (little training required, but hard to monitor) Online entry forms Google docs Photographs, video Digital/disposable camera, mobile phone Audio recording Voice recorder, mobile phone Aggregating data online Blogs (text, audio, video), Twitter Rich and timely information
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Type of data recorded When Date/time Duration Activity/task What Activity/task feelings/mood Context (environment/setting)
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When is data recorded? Randomly In response to prompts At specific intervals Based on activity
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General types of diary studies Unstructured Ask participants to report on everyday activities Trying to elicit general themes Structured Ask participants to report on everyday activities by answering specific questions about the activity Combination of question types Can also be used as a form of usability tests and problem reports Ask them to complete a task and report results, identify bugs, etc.
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Variations based on purpose Feedback (now)Elicitation (later) Record everything in situ No follow up Focus on the “what” data Mostly structured Can be burdensome on participants and researchers Record aspects or triggers of an activity Follow up with an interview to gain more information Data captured is used to elicit the “why” and the how” Mostly unstructured Can be problems with participant recall
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Cultural Probe Diary study++ Used to not only record activities, but capture more of “felt life” Stimulate thought as well as capture experiences http://www.hcibook.com/e3/casestudy/cultural-probes/ - pack contained a small disposable camera and a listening glass that participants used to listen at walls and doors and write what they heard. It also contained a small solid state recorder packaged in a sleeve that said 'dream recorder'. http://www.hcibook.com/e3/casestudy/cultural-probes/ Was used by designers at the Royal College of Art, London, to study the way people see their own homes. The results were used to enable designers to get a 'feel' of the meaning of home for many people. Experience sampling method (measure feelings, moods) Technology Probes (prototypes, experimental artifacts)
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Coordination Challenges Keeping participants on track Periodic reminders Feedback about the level of detail in responses Progressive incentives, surprise incentives/gifts (may or may not be allowable by BREB) Adapting to changes Start analysis as soon as first results arrive May need to re-evaluate the diary format if the data being captured is not what you expected!
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Advantages Time efficient for researchers Lower cost than direct observations Can have a broad geographic distribution Supports contextual reports over time Natural environment Can give rich data about contexts of use
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Disadvantages Participant fatigue Missed responses (frequency data is generally unreliable – lower bound) Study drop outs “after the fact” reporting to catch up Behaviour adjustment Participants need reminders Can be expensive for long durations Volume of collected data can be overwhelming
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Study protocol Introductory letter Consent form Needs to motivate their participation Very specific instructions Can be helpful to give an example of a filled out form (take care not to prime/limit) Diary form / collection aids
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Forms of analysis Track temporal patterns Look for semantic patterns in visual data Combine with interview analysis
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Diary reading When Participants Do the Capturing: The Role of Media in Diary Studies What was their motivation? What were their research questions? What was their approach? What were their findings? What were the strengths of their study design? What were the weaknesses? Do you trust their findings?
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Question writing exercise 1. Answer the questionnaire (these are BAD questions!) 2. Take a few minutes to think about what made the questions bad/hard to answer/hard to analyze 3. look at 6-17 on the questionnaire design checklist For each checklist item, identify which questions are examples of poor design 4. On Tuesday, we will discuss this as a class
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