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