GRE Subject 2026 Practice Test Psychology Research Methods Free Quiz 2

11. What design lacks random assignment but compares groups?

A. True experiment B. Correlational C. Observational D. Quasi-experimental

12. What is an in-depth examination of a single individual?

A. Survey B. Case study C. Experiment D. Correlational

13. What experiment keeps both participants and experimenters blind?

A. Single-blind B. Open-label C. Placebo D. Double-blind

14. What is an inactive substance used as a control?

A. Active B. Placebo C. Experimental D. Independent

15. What is the process of placing participants into groups by chance?

A. Random assignment B. Random selection C. Stratified D. Convenience

16. What is the process of selecting a sample by chance?

A. Random assignment B. Stratified C. Random selection D. Convenience

17. What is the process of explaining the study after completion?

A. Consent B. Debriefing C. Deception D. Confidentiality

18. What means that participants' identities cannot be linked to data?

A. Confidentiality B. Privacy C. Anonymity D. Consent

19. What group does not receive the treatment?

A. Experimental group B. Placebo group C. Independent group D. Control group

20. What group receives the treatment?

A. Control B. Experimental C. Placebo D. Independent