The Impact of Sleep Deprivation on High School Academic Performance Diana Akhmetzyanova Georgia College & State University theory • Sleep Deprivation- acute or chronic lack of sufficient sleep • Consequences: • Health problems • Mood disorders • Mental performance • Question: How is a student’s GPA affected by insufficient amount of sleep? Previous literature • Link and Ancoli-Israel (1995) students with higher GPA woke up later on school mornings and took fewer naps. • Wolfson and Carscadon (1998) students with higher GPA had more total sleep and earlier bedtimes on school nights. • Axelrod, Goebel, and Jaskiel (2012) sleep deprivation has negative effect on academic, athletic, and behavioral aspects of student’s life. data National Longitudinal Study of Adolescent Health • Wave One: Cross-sectional data collected during 1994-95 school year among adolescents in grades 7-12 (9-12) in the U.S. • Wave Three: Cross-sectional data collected between August 2001 and April 2002 among adolescents 18-24 years old variables SCHOOL BEHAVIOR DEMOGRAPHICS GPA SLEEP DEPRIVED SEX WANT TO GO TO COLLEGE HAPPY AT SCHOOL SPORT FRIENDS WORKED FOR PAY SKIP SCHOOL HISPANIC AFRICAN AMERICAN NATIVE AMERICAN ASIAN TOO MUCH TV ALCOHOL WEED NO DAD DAD WITH COLLEGE DEGREE COCAINE NO MUM INHALANT CIGARETTES MUM WITH COLLEGE DEGREE INCOME Empirical model GPAi =B0 + B1SDi + B2MALEi + B3WHITEi+B4NO_DADi +B5DAD_COLLEGEi+ B6NO_MUMi+ B7MUM_COLLEGEi+ B8SPORTi+ B9FRIENDSi+B10WANT_T_Ci +B11HAPPY_A_Si+ B12WORK_FOR_PAYi+ B13HH_INCOMEi+ +B14TOO_MUCH_TVi+ B15SKIP_SCHOOLi+ B16ALCOHOLi+B17WEEDi +B18COCAINEi+ B19INHALANTi + B20CIGSi +B19AFRICAN_AMERICANi+ B20NATIVE_AMERICANi + B19ASIANi+ B20HISPANICi+ Ei Summary statistics N=2,206 VARIABLE MEAN STD. DEV. MIN MAX GPA 2.68 .79 0 4 SLEEP DEPRIVED .13 .34 0 1 MALE .46 .49 0 1 WHITE .74 .44 0 1 HISPANIC .07 .27 0 1 AFRICAN AMERICAN .23 .42 0 1 NATIVE AMERICAN .04 .22 0 1 ASIAN .04 .21 0 1 NO DAD .25 .44 0 1 DAD COLLEGE .36 .48 0 1 NO MUM .03 .18 0 1 MUM COLLEGE .46 .51 0 1 SUMMARY STATISTICS VARIABLE MEAN STD. DEV. MIN MAX SPORT .74 .44 0 1 FRIENDS .91 .29 0 1 WANT COLLEGE .75 .43 0 1 HAPPY AT SCHOOL .71 .46 0 1 WORK FOR PAY .59 .49 0 1 INCOME 48.24 47.09 0 999 TOO MUCH TV .04 .44 0 1 SKIP SCHOOL .22 .41 0 1 ALCOHOL .52 .49 0 1 WEED .21 .41 0 1 COCAINE .02 .14 0 1 INHALANT .06 .24 0 1 CIGS .15 .36 0 1 RESULTS R2 = .31 VARIABLE COEF. STD. ERROR P-VALUE SLEEP DEPRIVED -.02 .08 0.822 MALE -.32 .03 0.000 HISPANIC -.16 .05 0.003 AFRICAN AMERICAN -.44 .04 0.000 NATIVE AMERICAN -.09 .07 0.208 ASIAN .05 .07 0.523 NO DAD -.03 .04 0.470 DAD COLLEGE .24 .04 0.000 NO MUM -.13 .08 0.114 MUM COLLEGE .23 .03 0.000 SPORT .01 .03 0.738 results VARIABLE COEF. STD. ERROR P-VALUE FRIENDS -.04 .05 0.438 WANT COLLEGE .30 .03 0.000 HAPPY AT SCHOOL .08 .03 0.016 WORK FOR PAY .04 .03 0.162 INCOME .01 .001 0.000 TOO MUCH TV .02 .07 0.793 SKIP SCHOOL -.18 .04 0.000 ALCOHOL -.004 .03 0.877 WEED -.17 .04 0.000 COCAINE -.05 .10 0.606 INHALANT -.02 .06 0.743 CIGARETTES -.21 .05 0.000 conclusion • No statistical evidence that sleeping less than 7 hours during school affects GPA • Engagement in “bad” behaviors has negative effect on GPA • Weed -.17 • Cigarettes -.21 • Students with parents who have college degree have higher GPA • Dad College .24 • Mum College .23 limitations • Small sample of sleep deprived individuals • No data on hours of sleep during weekends • Variables “Want to go to college” and “Happy at School” might result in endogeneity bias Thank you ! Have a Good Night Sleep!