The relationship between adolescent sleep and their academic performance or other health-related behaviors has long been a research project for scientists around the world. In the readings provided, three out of four groups of scientists conducted research on how sleep duration and/or quality affects students' academic performance, while the other group primarily studied adolescent health behaviors , for example the use of marijuana. between sleep and academic performance: while in the two trials Sleep Duration and Cognitive Performance in Adolescence and Understanding Adolescent Sleep Patterns and Academic Performance: A Critical Appraisal, the researchers came up with statements that confirm the positive relationship between sleep and academic performance, although the latter partly disagreed, in another trial entitled Association of Sleep and Academic Performance the results were different. Research shows that the amount of sleep has no apparent effect on students' academic performance. As noted in the essay Understanding Adolescents' Sleep Pattern and School Performance: a Critical Appraisal, shortened total sleep time, irregular sleep/wake. Schedules, late bedtimes and wake times, and poor sleep quality are negatively associated with adolescents' academic performance in middle school through the college years. In this research, not only adolescents, but also preteens and freshmen were involved. After studying the sleep habits of college students in detail, this research, along with several other researches around the world, came to the same result as described above. However, apparently not all scientists agree with this conclusion. In another p...... middle of article...... Performance in adolescence took into account other factors such as time to get up, duration of sleep and quality of sleep. sleep, and conducted larger-scale research with more participants in more areas. In The Spread of Sleep Loss Influences Drug Use in Adolescent Social Networks, scientists collected data over a period of time and constructed social networks of students. In conclusion, all four studies used similar but varied methods to study associations between adolescent behaviors. sleep and school performance or substance abuse have resulted in overlapping or conflicting findings. Works Cited Association of Sleep and Academic Performance Spread of Sleep Loss Influences Drug Use in Adolescent Social Networks Sleep Duration and Cognitive Performance in Adolescence Understanding Adolescent Sleep Patterns and Academic Performance: A critical evaluation