The most common cause of traumatic brain injury (TBI) is __________.

The director of the university sleep laboratory wanted to study the sleep of grandchildren and their grandparents. Sally, who is a 20-year-old college student, convinced her 68-year-old grandmother to take part in the study

What difference would the sleep laboratory find in the sleep of these individuals? a) Sally woke up more times. b) Sally had more Stage 4 sleep. c) Sally's grandmother had more REM sleep. d) Sally's grandmother spent more time asleep.

In the memorization of information, part learning is superior

a. in all cases. b. for extremely long, complicated information. c. only if the information is not very meaningful. d. because it is a form of feedback.