Information collected by sociologists themselves for own purposes.
- Social Surveys using written questionnaires or interveiws
- Experiments to test hypotheses
- Participant Observation to obtain insight into a group's way of life
- Can gather precise information needed for own purposes
- May not be able to gather it themselves
- Often costly and/or time-comsuming
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Information collected or created by someone else for own purposes, but which sociologists make use of.
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