How many hours should teens sleep, according to recommendations?
8–10 hours per night
How does lack of sleep affect classroom behavior?
More distraction, sleepiness, and poor attention
How does caffeine affect sleep?
Blocks adenosine and prevents sleepiness
What is a chronotype?
A person’s natural sleep–wake preference (lark or owl)
What type of light delays sleep when used at night?
Blue light from screens
What is the sleep homeostat?
System that tracks how long we’ve been awake and builds sleep pressure
What does the SCN control?
Circadian rhythm / sleep–wake timing
Do teens usually go to bed later if school starts later?
No, they usually keep the same bedtime
Why do teens struggle to wake up early for school?
Biological sleep delay + early school start times
Which brain region helps regulate emotions?
Amygdala
What is “social jet lag”?
Difference between weekend sleep schedule and school-day schedule
What is circadian rhythm most influenced by?
Light
Who is the author of "Adolescent sleep and educational performance"?
Sharman, R., Illingworth, G., & Foster, R.
Who is the author of "Schools shift as evidence mounts that later start times improve teens’ learning and well-being"?
Weir, K
Which brain region helps with attention and planning?
Prefrontal cortex (PFC)
Name one benefit of later start times for schools.
Better attendance / better mood / fewer car crashes / improved grades
What happens to teens’ sleep schedules during puberty?
They shift later; teens fall asleep and wake up later
Who is the author of "A Good Night’s Sleep: Necessary for Young Minds"?
Koopman-Verhoeff, M. E., & Saletin, J. M.