data-collection techniques. contents types of data observations event logs questionnaires interview
Post on 21-Dec-2015
224 Views
Preview:
TRANSCRIPT
Observations
Observe in real-time or from video recordings
Can be used both for measures and descriptions
Usability MeasuresUse/problemDescriptions
Measures from observations
Particularly suitable for measuring effectivity and efficiency
How many tasks were performed?
How quickly was the task performed?
Were the goals achieved?
How many errors were made?
Effectivity
Efficiency
Use/problem descriptions from observations
Description of breakdowns Describe situations when there is a
”breakdown” in the users interaction with the product
Description of use Describe how the user actually used the
product
Event logs
Logging of the user’s interaction with the product
Typically collected automatically Can be used both for measures and
descriptions
Usability MeasuresUse/problemDescriptions
http://zing.ncsl.nist.gov/WebTools/WebVIP/overview.html
http://zing.ncsl.nist.gov/WebTools/FLUD/example-pretty.html
http://zing.ncsl.nist.gov/WebTools/VisVIP/overview.html
http://zing.ncsl.nist.gov/hfweb/proceedings/etgen-cantor/
http://zing.ncsl.nist.gov/hfweb/proceedings/etgen-cantor/
Self-made or validated?
Designing your own questionnaire allows you to address issues of particular interest; however, it is difficult to create good items
Validated questionnaires (e.g. SUMI) have typically gone through extensive testing. Thus, test items are generally good, but they may not address the issues you are particularly interested in.
Measures from questionnaires
Can be used for measuring all attributes, but is particularly suitable for measuring satisfaction; we are interested in the user’s subjective opinion
Satisfaction
Interview
Structured, semi-structured, open Most useful for use/problem
descriptions
Use/problemDescriptions
Use/problem descriptions from interviews
Information about previous experiences and knowledge that might explain the user’s performance
Obtain explanations: the user’s preferences Breakdowns errors
top related