Define the effects of marijuana on studentâs heart rate

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An experimenter was interested in seeing the effects of marijuana on studentâs heart rate. The experimenter randomly selected 100 students from SUCO campus and ran double-blind experiment. 50 of the students received .5 g of marijuana, and the other 50 received a placebo. The 50 students who received the placebo were separated and put in a room with dark walls, while the other group remained outside on the grass. The experimenter then asked the students to rate their heart rate on a 1-7 Likert scale. 7 meaning their heart rate is at its highest. He also performed a physiological test on the students to test their heart rate.

What could be considered extraneous in this experiment?

Reference no: EM131639682

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