1. Define1internal validity, external validity, and construct validity. Then, distinguish4 between the three validities. Finally, provide3 an example of a threat to each validity.
2. List1the two main questions that should be asked when determining whether a research study is ethical. Then, explain3 how both informed consent and debriefing can help make a research study more ethical. Next, explain3 the role of validity in determining whether a study is ethical, taking care to explain3the relationship between the type of research question being asked and the type of validity that the study should have.
3. Define1 IRB and explain3 how an IRB can help make research ethical. Show3 how, from an ethical standpoint, conducting research on nonhuman animals is similar to conducting research on humans (refer to APA guidelines in your answer).
4. Either6justify or criticize6 the requirement that research be approved by an ethics committee (for human research, an Institutional Review Board [IRB], for research with nonhuman animals, an Institutional Animal Care and Use Committee (IACUC).