Controlled Observation
Controlled observations are typically conducted in a laboratory instead of the field or work environment. Often, participants are assigned to their groups. There is usually a standard operations procedure so that participants are instructed similarly for each condition in the experiment.
There may be an agreed upon list of behaviors that the experimenters are observing for and thus instead of recording everything that happens the experimenter simply marks down when a participant does a behavior on the list.
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Dahlbäck, N., Jönsson, A., & Ahrenberg, L. (1993). Wizard of Oz studies — why and how. Knowledge-Based Systems, 6(4), 258–266.
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Dejoode, J. A., Cooke, N. J., & Shope, S. M. (2003). Naturalistic Observation of Airport Incident Command. Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 47(3), 663–667.