c. placebo d. dependent variable 12. Dr. Welsh is doing experiments using drugs.

Question

c. placebo d. dependent variable 12. Dr. Welsh is doing experiments using drugs. He is concerned that his subjects will respond to demand characteristics. He may want to control for this by using which of the following? a. stratification b. two independent variables c. a placebo d. randomization omly 13. Mr. Marshall hired June to collect data from a group of subjects. Neither June nor the subjects were aware of the independent variable that Mr. Marshall had manipulated. This is an example of a. randomization b. a placebo c. double-blind control d. experimenter bias 14. Which of the following is NOT a strength of the experiment as a research method? a. Cause-and-effect relationships can be established. b. Experimental conditions usually seem realistic to subjects. c. Experiments can usually be replicated if the findings are valid. d. Variables can be analyzed carefully because of the degree of control over them. al was 15. In some experiments, demand characteristies are controlled by making sure neither the participant nor the experimenter knows what condition(s) the participant experienced until the data are collected and analyzed. This is called a(n) procedure. a counterbalancing b. double-blind c. treatment-placebo d. matched ignorance es 16. Participants volunteered to be in a study of the effects of vitamin supplements. The experimenter was given an unlabeled syringe containing saline or a vitamin supplement to inject into the participant. The participants were not told if the injection they received is the vitamin supplement or a placebo. This experiment is using a(n) technique a deceptionE b.dou ble-blind dindepen de me asure of the verin he

Explanation / Answer

12. Answer - C

Placebo can be used to control demand characteristics.

13. Answer- C

It is an example of double blind control.

14. Answer - B

Experimental conditions are very different from real life conditions.

15. Answer - B

This is called double blind

16. Answer - C

Single blind is when the experimenters know the independent variable but the participant do not know.

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