Answer: the study of the effect of a full moon on human behavior
Step-by-step explanation:
The pseudoscience is a discipline which is based on beliefs, and opinions which are claimed to be logical and scientific but they actually are not as they are not supported by evidences obtain from experimental trails.
The study of the effect of a full moon on the human behavior is the example of the pseudoscience as it is based on the opinions rather on the basis of the evidences obtained from the experimental trails.