AP PSYCHOLOGY

Detailed explanation-1: -Aim. Dement and Kleitman’s research aimed to find objective methods to demonstrate a relationship between dream content and physiological indicators of dreaming. Specifically, they wanted to investigate: Does dream recall differ between REM and nREM stages of sleep.

Detailed explanation-2: -From the study by Dement and Kleitman, it was concluded that it is most likely that we on dream during REM sleep. Dreams are more likely to occur at the end of the night as REM time lasts longer. The occasional recall of dreams from nREM can be explained as memory of the previous stage of REM sleep.

Detailed explanation-3: -Independent Variable (IV): Aim 1: REM or nREM sleep stage. Aim 2: waking after 5 or 15 minutes of REM sleep. Aim 3: eye-movement pattern type. Dependent Variable (DV): Aim 1: whether the participants reported a dream, and if so, the details.

Detailed explanation-4: -Other parasomnias include phenomena associated with REM sleep, such as dreaming and can manifest as nightmare disorder. Other disorders involve the aberrations of REM-related muscle atonia, which results in behavioral disorders such as recurrent isolated sleep paralysis and REM behavior disorder.