It is found that an experimenter somehow influenced the participants. This
A) is a problem, but can be corrected through statistical procedures.
B) occurs all the time in research.
C) is sufficient to cast doubt on causal conclusions.
D) is a problem, but not bad enough to question causal conclusions.
Question 2
Experimenter effects do NOT result from the experimenter's knowledge of
A) the hypothesis being tested.
B) the assignment of individual participants to conditions of the experiment.
C) the nature of the experiment and control conditions.
D) the specific details of the independent variable.