4. Most often, an observer’s presence is disguised in order to control the tendency of
people to behave differently when they know their actions are being watched.
5. The advantage of a contrived setting is that researchers are better able to control
outside influences that might affect observed behavior. The disadvantage of this
6. The approaches used with mechanical observation range from straightforward
things like video cameras, tape recorders, and bar-code scanners to more complex
IV. Instruction Suggestions:
1. Begin with a quick review of the main observational methods. The distinctions
between structured-unstructured, disguised-undisguised, natural setting and
2. The discussion can then be profitably directed to the development of an
observational study to answer some specific research question. The following
problem, for example, has proven helpful in distinguishing among the various types
of observational studies and the advantages that arise with each.
Assume you were interested in assessing the influence of children on a family’s
purchasing decision. How would you investigate this problem by observation?