Social categories such as "nerds," "normals" and "burnouts" represent

Which of the following sleep disorders is most commonly seen in children?

a. night terrors b. narcolepsy c. sleepwalking d. insomnia

Steve studies for an upcoming quiz in the noisy cafeteria. His ability to focus on the material is the result of

A) divided attention. B) executive functions. C) selective attention. D) the sensory register.