Keyphrases
High School
100%
Natural Experiment
100%
Depressive Symptoms
100%
Time Impact
100%
Depressed Mood
100%
School Start Time
100%
Policy Change
80%
High BMI
40%
Minneapolis
20%
High School Students
20%
Metropolitan Areas
20%
Time Delay
20%
Expected Benefits
20%
Long Sleep
20%
Mood Symptoms
20%
Older Students
20%
Low Mood
20%
Sleep Effects
20%
Screen Use
20%
Natural Experiment Design
20%
Sleep-related Symptoms
20%
Signal Heterogeneity
20%
Social Sciences
Secondary Schools
100%
Mood
100%
Policy Change
100%
High School Student
25%
Standard Deviation
25%
Metropolitan Area
25%
Economics, Econometrics and Finance
Metropolitan Area
100%
Measure of Dispersion
100%
Psychology
Mood
100%
Body Mass Index
50%
High School Student
25%