Tracy is excited to travel to Portugal so she can learn more about her husband's native country. She has learned some Portuguese phrases to help her communicate with his friends and family. This is an example of __________

The stage of sleep in which delta waves begin to appear is ______ sleep

a. Stage 1 c. Stage 3 b. Stage 2 d. Stage 4

Margaret has been suffering with dysthymia for several years and has sought treatment on several occasions. About one month ago she developed more severe symptoms of depression, which have been maintained almost daily

The condition she is experiencing is best described as a. double depression. b. chronic melancholia. c. adjustment disorder with bipolar features. d. recurring melancholic depression.