AP PSYCHOLOGY

Detailed explanation-1: -Dement and Kleitman used a repeated measures design when dream estimates where being done. The IV was whether the participant was woken during REM or nREM sleep.

Detailed explanation-2: -A sleep laboratory, an EEG machine, electrodes, a door bell, and a tape recorder.-No contact between participants and the experimenter.-Door bell used to wake up participants.-Tape recorder used for participants to describe their dreams, so there is no experimenter bias.

Detailed explanation-3: -Aserinsky and Kleitman (1955) were first to use an EEG (a machine that detects the activity of nerve muscles) to investigate sleeping and dreaming. They found that humans have several sleep stages during the night, which alternate from REM (rapid eye movement) to NREM (non-rapid eye movement).

Detailed explanation-4: -From the study by Dement and Kleitman (sleep and dreams): Name the technique used to measure brain activity. The technique used to measure brain activity was an EOG. Identify one reason for using this technique to measure brain activity. An EOG is an objective measure, meaning that the EOG is unbiased.