Kyoung-Sae Na, Soyoung Irene Lee, Hyun Ju Hong, Myoung-Ja Oh, Geon Ho Bahn, Kyunghee Ha, Yun Mi Shin, Jungeun Song, Eun Jin Park, Heejung Yoo, Hyunsoo Kim, Yun-Mi Kyung
The influence of unsupervised time on elementary school children at high risk for inattention and problem behaviors
Child abuse & neglect
sleep waking behaviors change significantly adolescent years objective study describe relation adolescents sleepwake habits characteristics students age sex school daytime functioning mood school performance behavior sleep habits survey administered homeroom classes 3120 high school students 4 public high schools 3 rhode island school districts selfreported total sleep times school weekend nights decreased 4050 min across ages 1319 ps lt 001 sleep loss due increasingly later bedtimes whereas rise times consistent across ages students described struggling failing school cs dsfs reported school nights obtain 25 min less sleep go bed average 40 min later b students ps lt 001 addition students worse grades reported greater weekend delays sleep schedule better grades furthermore study examined priori defined adequate sleep habit groups versus less adequate sleep habit groups daytime functioning students short schoolnight total sleep group ltl6 hr 45 min andor large weekend bedtime delay group gt120 min reported increased daytime sleepiness depressive mood sleepwake behavior problems ps lt 05 versus sleeping longer 8 hr 15 min less 60 min weekend delay altogether adolescents surveyed get enough sleep sleep loss interferes daytime functioning