Substance use of all kinds peaks in the early ____

Research into hemispheric lateralization indicates that compared to the right hemisphere, the left hemisphere plays a more significant role in:

a. spatial tasks, such as fitting together puzzle pieces b. judging temporal durations c. interpreting and understanding emotions d. language and communication

The Jenkins and Dallenback study of forgetting after sleep suggests that forgetting is a function of ____________

a. learning b. fatigue c. time d. failure to use mnemonics