1.What the there types of evidence necessary to form a conclusion regarding the results of the bystander and thieves study? Explain how each form of evidence would be used to drew a conclusion for the example provided
2.What are the seven steps a researcher follows in conducting an experiment?
3.List five possible threats to internal validity. How do these threats weaken a design?
4.Explain the primary differences between preexperiments , true experiments, and quasi experiments.