When compared to other methods, an advantage of experiments is that the participants are always representative of the larger population

These generally begin with a piercing scream

a) parasomnias b) sleep terrors c) somnambulism d) somniloquy

According to the article The Nose Knows about the ability of mothers to detect the scent of their babies, in the main study when mothers were presented with three odors [infant, sweat and lotion] some mothers had their own infant's odor to

recognize and some had the odor of an unfamiliar infant. It was found that: (a) mothers were better at recognizing their own infant's odor (b) mothers were better at recognizing an unfamiliar infant's odor (c) the group of mothers who were trying to recognize their own infant's odor were not different from the group of mothers working with an unfamiliar infant's odor