1. Present examples of both self-report and observational research practices, including the advantages and disadvantages of each (based on your personal experience, if possible).  [Example: Every year my cable internet service provider sends an email to survey customer satisfaction. This survey asks for self-report answers. This is a good method for a company to realize their service quality but there is a fundamental weakness on the reliability of answers]
  2. Differentiate random sampling from random assignment. Also, provide two pairs of examples of an independent variable (IV) and a dependent variable (DV) based on their definitions (e.g., in the study of the effect of emotion on childrens behavior, the IV is emotion and the DV is behavior). 

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