A group of researchers is planning an experiment to test the hypothesis that sle

Question

A group of researchers is planning an experiment to test the hypothesis that sleep deprivation decreases memory retention All participants will have a practice session in which they memorize words. That night they will sleep in a monitored lab for a specified time that depends on their group. Then each participant will be tested on how many words they remember from the practice session. The researchers are deciding what conditions they should manipulate for the experimental group Q3.7. The table below shows conditions for the control group and three possible experimental groups. Which experimental group should the researchers use to compare to the control group in order to test their hypothesis? Control Group Experimental Group 1 Experimental Group 2 Experimental Group 3 Number of hours of sleep 8 hours 4 hours 4 hours 8 hours Days between practice and testing 1 day 1 day 3 days 1 day Length of practice session 30 minutes 30 minutes 30 minutes 30 minutes Experimental group 1 Experimental group 2 Experimental group 3 None of the experimental groups are appropriate for testing their hypothesis Submit

Explanation / Answer

The researcher should use experimental group 1 to test the hypothesis. In experiment, control and experiment should have only one variable change at a time which gives best result. So in the experimental group one only one variable is changed which is sleeping time and here they are also testing sleep deprivation effects .

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