There have been many studies that link “unhealthy sleep habits” with decreased cognitive functioning. The
current study examined the relationship between grade-point average (GPA) and sleep, in terms of quality and
quantity. Surveys were administered to college students around the campus of the University of Minnesota in
order to assess the levels of sleep deprivation and sleep quality of collegiate sleeping behaviors. Six variables
were analyzed from the participants' surveys: sleep quality as assessed by the Groninger Sleep Quality
Questionnaire, academic success, and four different aspects of sleep quantity. These aspects included number of
nights spent with less than five hours of sleep during the past week as well as during an average week, number of
hours of sleep obtained in an average night, as well as the number of “all-nighter's” the students had pulled in the
past year. Results indicated a significant positive correlation between amount of sleep per night with GPA, and a
significant negative correlation between average number of days per week that students obtained less than five
hours of sleep and GPA.