One factor that may make it difficult to interpret the result of even a true experiment in a natural setting is contamination (when there is communication of information about the experiment between groups of participants). Briefly describe the three types of problems that can result from contamination.

Explanation:

Contamination can have undesirable consequences in real experiments, some of them are related to the feelings that may arise in the research participants, the contamination bias reduces the differences between the research groups, and can cause a comparison between the treatments of each different group, the which can generate conflicts and rivalries on the part of groups that consider themselves to be inferior to others. These contamination-related problems can significantly interfere with the research results.

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