When subjects know they are in a research study and alter their usual or routine behavior to react ...

When subjects know they are in a research study and alter their usual or routine behavior to react to the presence of the researcher, this is called
 
  A) a research bargain.
  B) subjective research.
  C) the Hawthorne effect.
  D) an overly simplified question.

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A person who is in a position to grant or deny access to the research scenario by making the researcher's goals very easy, very difficult, or impossible is called a(n)
 
  A) gatekeeper.
  B) guide.
  C) informant.
  D) bargainer.

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A person indigenous to the group and setting being studied who is convinced that the study is worthwhile and meaningful to group and that no harm will fall upon the group, and then extends his or her credibility among the group to the researcher is a(n)
 
  A) gatekeeper.
  B) guide.
  C) informant.
  D) bargainer.