August 21, 2012
Science Daily/Society for Research in Child Development
Regardless of how much a high school student generally studies each day, if that student sacrifices sleep in order to study more than usual, he or she is more likely to have academic problems the following day. Because students tend to increasingly sacrifice sleep time for studying in the latter years of high school, this negative dynamic becomes more and more prevalent over time.
Although the researchers expected that extra hours of studying that ate into sleep time might create problems in terms of students' understanding of what they were taught in class, they were surprised to find that diminishing sleep in order to study was actually associated with doing more poorly on a test, quiz, or homework (the opposite of the students' intent).
"As other studies have found, our results indicated that extra time spent studying cuts into adolescents' sleep on a daily basis, and it is this reduced sleep that accounts for the increase in academic problems that occurs after days of increased studying," Fuligni explained. "Although these nights of extra studying may seem necessary, they can come at a cost."
Fuligni said the study's findings do not suggest that teens should spend less time studying overall, but that those teens who give up sleep to study more than usual are more likely to have academic problems the following day.