Surveys ការស្ទង់មតិ deficit កង្វះ start ចាប់ផ្តើម
tired អស់កម្លាំង psychologist អ្នកចិត្តវិទ្យា depression សៅហ្មងក្នុងចិត្ត
sleepy ងងុយ improve ធ្វើអោយប្រសើរ head នាយក
decreased ចុះថយ changing ផ្លាស់ប្តូរ way មធ្យោបាយ
assistant dean សាកលវិទ្យាធិការរង mood ទឹកមុខ
Surveys of
American teenagers find that about half of them do not get enough sleep on
school nights. They get an average of sixty to ninety minutes less than experts
say they need.
One reason for this deficit
is biology. Experts say teens are biologically programmed to go to sleep later
and wake up later than other age groups. Yet many school start classes as early as seven in the
morning. As a result, many students go to class feeling like sixteen- year- old
Danny. He plays two sports, lacrosse and football. He is an active teen-
except- in the morning.
He says getting up in the morning is pretty terrible. He is
very tired. Through first and
second period of school he can barely stay awake.
Michel Breus is a clinical psychologist
with a specialty in sleep disorders. He says teenagers need to sleep eight to
nine hours or even nine to ten hour a night. He says sleepy teens can experience a form of depression that could have big effects on
their general well-being. It can affect no just their ability in the classroom
but also playing sports and driving a car.
Michel Breus says any tired driver is dangerous, but
especially a teenager with a lack of experience. So what can schools do about sleep
students? The psychologist says one thing they do is start classes later in the
morning. He points to studies showing that students can improve by a full letter grade in their first-
and second period classes.
Eric Peterson is the head
of St. George’s school in the state of Rhode Island. He wanted to see if a
thirty- minute delay would make a difference. It did. He says visits to the
health center by tired students decreased
by half. Late arrival to first period fell by a third. And student reported
that they were less sleeping during the day.
Eric Peterson knows that changing
start times is easier at a small, private boarding school like his. But he is
hopeful that other schools will find a way.
Patricia Moss, an assistant dean
at St. George’s School says students were not the only ones reporting better
results. She says just about all the teachers noticed immediately much more
alertness in class and a more positive mood.
