Dement and Kleitman past paper questions Flashcards
Describe the revised procedure used to measure participants’ estimations of REM sleep duration. (2)
Participants were woken up either 5 or 15 minutes into REM and asked to choose the dreaming duration between 5 or 15 minutes.
In the study by Dement and Kleitman (sleep and dreams) the procedure that the researchers first used to measure participants’ estimations of REM sleep duration was unsuccessful and had to be revised.
Describe how the researchers first attempted to measure participants’ estimations of REM sleep duration. (2)
Participants were woken at different increments of time (in REM) and were asked to estimate the time they had been dreaming without given a fixed choice.
Explain one methodological weakness of the dement and kleitman study. (2)
The study lacks ecological validity. This is because the participants had sleep in a laboratory attached to an EEG machine.
From the study by Dement and Kleitman (sleep and dreams): Name the technique used to measure brain activity. (1)
EEG
Identify one reason for using this technique to measure brain activity. (1)
To analyze the brain waves patterns
Outline one of the dreams reported when vertical eye movement was recorded. (2)
Climbing a set of ladders looking up and down as they did.
In the study by Dement and Kleitman (sleep and dreams), participants were fitted with electrodes for the EEG (electroencephalogram). Describe the procedure after these electrodes had been fitted. (5)
After the participants were fitted with electrodes for the EEG they were taken to a quiet, dark room to sleep. The wires were organised into a single cord or ponytail to prevent tangling. Throughout the night, the EEG recorded brain activity continuously at speeds of 3 or 6mm per second. At various times during the night, participants were woken up by a bell either during REM or nREM or 5 or 15 minutes after REM sleep had began.
