Selecting appropriate data collection methods depends in great part on the types of data sought.
Committing to use data collection methods that are familiar before knowing what data must be collected, and from where or whom, could lead to incomplete or irrelevant data sets. It is an error to pick the tools first and then be limited by the data that tool will generate.
All observations can be reduced to measurement.
Person-centered, indirect methods such as focus groups and interviews may be best for collecting open-ended data from a comparatively small number of participants. These methods require significant facilitator training, time, and effort.
Instruments such as tests and questionnaires may be best for collecting specific hard ...
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