This document provides a study plan and pre-test questions for Devry PSYC 110 Week 2 Chapter 4. The pre-test covers topics related to sleep cycles, stages of sleep, sleep disorders, and psychoactive drugs. It includes 15 multiple choice questions testing knowledge of natural sleep cycles, sleep stages, night terrors, sleep apnea, the body's sleep-wake cycle, withdrawal symptoms, effects of drugs, and dream content and processes. The document directs students to an online tutorial and notes that more classes are available on the provided website.