RESEARCH STUDY 9.2
Dr. Acitelli studies sleep and sleep disorders. She is curious as to whether falling asleep in front of a television set causes people to fall asleep more slowly than falling asleep regularly. She recruits a sample of 60 middle-aged women from a local church who reported no history of sleep problems. She creates three conditions. All participants come to the sleep lab for three nights in a row and experience all three conditions. In the first condition (A), participants fall asleep in front of a television that is off. In the second condition (B), participants fall asleep in front of a television that is turned on to the same 24-hour news channel. In the third condition (C), participants fall asleep in front of a television that is turned on to the same 24-hour news channel but is muted. With the use of an electroencephalograph (EEG), the researcher measures how long it takes participants to fall asleep.
-Refer to Research Study 9.2 above to answer the following question. Given that Dr.Acitelli's participants have agreed to participate for all three nights,which type of counterbalancing should she use?
A) Partial counterbalancing
B) Full counterbalancing
C) Minimal counterbalancing
D) Carryover counterbalancing
E) None of the above

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The Answer of RESEARCH STUDY 9.2
Dr. Acitelli studies sleep and sleep disorders. She is curious as to whether falling asleep in front of a television set causes people to fall asleep more slowly than falling asleep regularly. She recruits a sample of 60 middle-aged women from a local church who reported no history of sleep problems. She creates three conditions. All participants come to the sleep lab for three nights in a row and experience all three conditions. In the first condition (A), participants fall asleep in front of a television that is off. In the second condition (B), participants fall asleep in front of a television that is turned on to the same 24-hour news channel. In the third condition (C), participants fall asleep in front of a television that is turned on to the same 24-hour news channel but is muted. With the use of an electroencephalograph (EEG), the researcher measures how long it takes participants to fall asleep.
-Refer to Research Study 9.2 above to answer the following question. Given that Dr.Acitelli's participants have agreed to participate for all three nights,which type of counterbalancing should she use?
A) Partial counterbalancing
B) Full counterbalancing
C) Minimal counterbalancing
D) Carryover counterbalancing
E) None of the above