A study examined the impact of THC (the active ingredient in marijuana) on various physiological and psychological variables. The study recruited a sample of 18 young adults who were habitual marijuana smokers. Participants came to the lab 3 times, each time completing the entire series of tests and questionnaire, but each time smoking a different marijuana cigarette: one with 3.9% THC, one with 1.8% THC, and one with no THC (a placebo). The order of the conditions was randomized and participants were not told how much THC was in the cigarette they smoked until after all the data were collected. This is an example of

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23-10-2019
Social Studies

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A study examined the impact of THC (the active ingredient in marijuana) on various physiological and psychological variables. The study recruited a sample of 18 young adults who were habitual marijuana smokers. Participants came to the lab 3 times, each time completing the entire series of tests and questionnaire, but each time smoking a different marijuana cigarette: one with 3.9% THC, one with 1.8% THC, and one with no THC (a placebo). The order of the conditions was randomized and participants were not told how much THC was in the cigarette they smoked until after all the data were collected. This is an example of

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Аноним Аноним · Answer 1 · 2019-10-24T19:19:09+02:00

Answer:

This is an example of repeated measures design

Explanation:

In this type of experiment, groups are tested under several different conditions over a period of time.

The advantages of this method are the use of fewer patients for testing and a better statistical result.

On the other side, the disadvantage are the possibility that the order of the tests influence the final result, and due to the low number of people, dropouts can hinder the research.