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› 7 Data Gathering
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HCI
7 Data Gathering
Jaar 1 (universiteit)
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5 key issues for data gathering = 1.setting goals 2.indentifying participants 3.relationship with participants 4. triangulation 5.pilot studies setting goals = basis of data gathering format { which info is necessary about the user, context and product} identifying participants = population {the people you want to gather data from} , sampling {the people in the population accessible for surveying} saturation sampling = acces to all members of population probability sampling = random sampling {statistical test can be applied, findings can be spread over whole population} non-probability sampling = convenience sampling or volunteer patterns { generalizations are not robust because often not sufficient participants} relationship with participants = use a consent form {privacy for participant, honesty and neutrality for researcher} triangulation = investigating a phenomenen from at least 2 perspectives data triangulation = data gathered from different sources at different times investigation triangulation = different researcher collected and interpreted data theory triangulation = different theoretical frameworks used to view data methodological triangulation = employ different data gathering techniques pilot studies = small trial run of the main study data = what you collect information = gained from analyzing and interpreting data conclusions = actions to be taken based on information data recording = questionnaires, diaries, interaction logging notes + photographs pluspoints = good overview of quality & content of data, less intrusive to participant, very flexible {photographs used to support notes and sketches} notes + photographs minuspoints = easy to lose concentration, may be biased, tiring audio + photographs pluspoints = audio less intrusive than video, more attention available for participant audio + photograps minuspoints = transcribing takes long, often too much detail recorded video pluspoints = both visual and audio video minuspoints = intrusive, planning problems (Kahn and Cannell, 1957) interviews = conversations with a purpose open-ended interviews/ unstructed interviews = less control of interviewer structured interviews= fully prepared questions semi-structured interviews = prepared questions but free space group-interviews= groups guided by a facilitator focus group = 3/10 people, sample of target population, discussion led by trained facilitator interview structure = 1. intro 2. warm-up 3. main 4. cool-off 5. closing retrospective interviews = reflect on activity or data gathering to double check gathered data questionnaires = available to a larger group of people; alike interviews observation = use an observation framework { who, what, where, actors etc} degree of participation, passive = observer, not interacting degree of part. participant observer = insider, becomes member of studied group ethnography = social organization of activities, collaborative systems, direct observation, no a priori structure or knowledge think-aloud principle = in a controlled environment ask questions about what a person is thinking ESM experience sampling method = recording of everyday life, prompted at random times using a device to answer questions about their context
Ingezonden op 03-04-2018 - 610x bekeken.
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