All human beings have good dreams sometimes and bad dreams sometimes, so there is no particular problem here that needs to be studied. Dreams in general are studied by psychologists, who find insight into the psyche through dream analysis. Sleep researchers investigate the physiology of dreaming; how and when it occurs, and the associated sleep states of dreams. See the attached links for more information.
You could say either, but the traditional good-night phrase is "Sweet dreams."
When you loose a tooth, when you are bad, and when you are good. Fairys come a sometimes they give you dreams.
Good Dreams was created on 2004-11-03.
I think they would depend totally on what you want to study buddy.
The Cherokee.
good night and sweet dreams my friends (a French would say 'de beaux rêves' and not 'doux rêves')
we do not need to study
There is no specific word in the English language for a person who only has nightmares with no good dreams.
good thoughts
You say "Good night and sweet dreams" in Yoruba language of the Western African origin as "od'aro kosi la ala to da".
Those Good Old Dreams was created in 1981.
In restaurants, this is what Calamari is.