Internal Validity in Research: Homework Help Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Nikki is doing an experiment to see if eating breakfast helps people focus. She uses two types of students: those in a gifted class and those who are in a standard class. Which of these is the best example of a possible extraneous variable?

Question 2 2. What is the strongest statement in research?

Question 3 3. High internal validity means that the researcher can prove that __________ cause(s) changes in the dependent variable.

Question 4 4. Which of the following is one way to reduce the impact of testing effects on a study?

Question 5 5. Corneisha is doing an experiment to determine whether the amount of time a person spends reading affects their SAT score. After a few of the subjects come to the lab and read for a certain amount of time, one of Corneisha's lamps burns out and therefore makes the lab much darker for the rest of the subjects. In this example, the amount of light is what type of variable?

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Question 6 6. Jillian believes that women are better at science than men. She gives a group of subjects a science test and then grades the women's test easier than the men's. This is an example of what type of bias?

Question 7 7. Pearl wants to know if a drug makes people feel happy. To one group, she assigns subjects who are naturally happy people, and she assigns mostly depressed people to the other group. This is an example of:

Question 8 8. Lucy does unusually well on a task one week. According to the regression to the mean phenomenon, it is likely that the next time Lucy does the same task she will _____.

Question 9 9. In terms of internal validity, what is mortality?

Question 10 10. Mary wants to study the effect of caffeine on productivity. Which of the following is the best example of an extraneous variable for this study?

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Question 11 11. Nikki is doing an experiment to see if eating breakfast helps people focus. If Nikki tests some kids in a noisy classroom and some in a quiet classroom, what type of extraneous variable is she demonstrating?

Question 12 12. Carrie is doing an experiment relating to work ethic, her independent variable is monetary reward. Though when interacting with her two groups, she ends up treating them differently. For group A, she is really nice and friendly, but for group B, she is gruff. What type of threat to internal validity is this?

Question 13 13. An extraneous variable is not the _____, but still affects the _____.

Question 14 14. Nikki is doing an experiment to see if eating breakfast helps people focus. How can Nikki control for any possible physical extraneous variables?

Question 15 15. Sally's subjects give her the answer she wants to hear so that she will be pleased with them. This is an example of which type of bias?

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Question 16 16. If a new president is elected partway through a study, this might be an example of what type of threat to internal validity?

Question 17 17. Which of the following is the best definition of extraneous variables?

Question 18 18. Jenni did a puzzle on Thursday and then did it again the following Monday. She did much better on Monday, which could be attributed to which threat to internal validity?

Question 19 19. In Keri's study, some of the research participants are in a noisy room and some are in a quiet room. This is an example of which type of extraneous variable?

Question 20 20. Sally is doing a study on whether exercise affects body weight. Which of the following would be an example of an extraneous variable in this study?

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Question 21 21. High internal validity means that the researcher can say that _____ caused changes in the dependent variable.

Question 22 22. Dane is a subject in a study. He is given a pretest, instructional videos to watch at home, and then another test a few days later. Dane watches the videos, but doesn't learn much from them. Even so, his final score improves because he recalls some of the information that was presented on the pretest. This situation is an example of which of the following threats to internal validity?

Question 23 23. When a person feels better just because they are given a treatment, even if that treatment doesn't do anything, it is called a _____.

Question 24 24. Corneisha is doing an experiment to determine whether the amount of time a person spends reading affects their SAT score. Some of the research participants are English majors in college, and some of the participants are currently in the work force. The fact that some of the participants are English majors in college could be an example of which of the following?

Question 25 25. Margaret designs a study so that neither she nor her subjects know whether they are in the treatment group or the control group. What type of study is this?

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Question 26 26. Trevor performs an experiment and determines that only the independent variable caused changes in the dependent variable. Which of the following can Trevor say his experiment has?

Question 27 27. Internal validity is the extent to which a researcher can say that _____ caused changes in _____.

Question 28 28. Which of the following phrases BEST describes selection interaction?

Question 29 29. Internal validity is the extent to which a researcher can say ______ is causing changes in the dependent variable.

Question 30 30. Explain what is happening with the threat of maturation.

Internal Validity in Research: Homework Help Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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