CMN 147 REAL EXAM QUESTIONS & CORRECT ANSWERS
WELL ACED
Sleep mediator study looks at - CORRECT ANSWER >>>- tests the direct relations between
media exposure, sleep and various health outcome (attention, agressions, and BMI and the
indirect effect of media exposure through sleep disturbances
past research BMI and media - CORRECT ANSWER >>>have found small but significant positve
Rs between the amount of media girls use and their BMI and fat mass
sleep on BMI study - CORRECT ANSWER >>>-Longitudinal study of over 1000 individuals from
age 3 to 32
- people who sleep less have higher BMI
-perists thru adulthood
-Controlling for early childhood BMI, SES, parent BMI, child and adult television viewing,
physical activity, smoking
displacement hypothesis - CORRECT ANSWER >>>- screen time may replace more physically
active activities or sleep time
sleep benefits for children - CORRECT ANSWER >>>- energy
- weight maintenance
- synaptic and cognitive development
past research media and sleep - CORRECT ANSWER >>>- media can disturb sleep
- is related to sleeping fewer hours and feeling more tired throughout the day
1|Page
,past research sleep and obesity - CORRECT ANSWER >>>- sleep on decline as childhood obesity
goes up
- sleep restrictions predict childhood obesity
- negative R between sleep duration and obesity
- shortr sleep time significantly and negatively predicted adults BMI at age 32 even when
controlling for other Vs
young adults - CORRECT ANSWER >>>16-25
adolescence - CORRECT ANSWER >>>13-17
middle childhood - CORRECT ANSWER >>>8-12
children - CORRECT ANSWER >>>2-7
infants - CORRECT ANSWER >>>0-1
Children and adolescents as special populations (5) - CORRECT ANSWER >>>- What can
they/can they not do?
-differences influence how children and adolescents use media, and how they are influenced by
media
-physical development
-Cognitive Development
-socio-emotional development
past research attention problems sleep and media use - CORRECT ANSWER >>>
2|Page
,Physical Development (3) - CORRECT ANSWER >>>Children grow and get stronger- ◦Influences
actions they can imitate from media (ex cannot mimic fight scene)
Motor development increases- ◦Better able to use a mouse, or play a video game (Ex touch and
drag0
Puberty- ◦ Changes in hormones; adolescents become interested in more intimate relationships,
body changes
Cognitve Development (4) - CORRECT ANSWER >>>-Growth in working memory- ◦Influences
comprehension and ability to multitask, manipuate different pieces of info at once
-Perspective-taking
-Understanding of transformations and more complex thought processes ex conservation of
liquid, objects ~6yrs
-Executive functioning (mental control and self-regulation) ex watching lecture vs fun stuff
socio-emotional development (4) - CORRECT ANSWER >>>-Growing importance of peer groups
and maintenance of group functioning - group consumes same media
-Identity development ex I am a person who watches this show, I am a person who has this
device
-Growth of empathy, sympathy, and altruism ex lil boy understood his art was bad and they did
not like it
-Growth of ability to recognize emotions
how much energy for brain - CORRECT ANSWER >>>-1/4 of energy and nutrients way more than
other organs
- brain does a lot when it is awake
brain cleaning - CORRECT ANSWER >>>- takes 9 hours to fully clean but some sleep = some
cleaning
3|Page
, -
how to get nutrients to brain? - CORRECT ANSWER >>>- circulatory system surrounds and gets
thru brain
stroke risk and sleep - CORRECT ANSWER >>>- less than 6 hours increases stoke risk
glmphatic system - CORRECT ANSWER >>>CSF
percentage of sleep deprived - CORRECT ANSWER >>>- 30% of adults
- 63% of adoles
Adenosine - CORRECT ANSWER >>>sleep pressure
how to get rid of brain waste? - CORRECT ANSWER >>>-lymphatic system collects proteins
and waste and disposes of it but this does not cover the brain (neck down) - so brain makes
use of the exsisiting system: the cerebral spinal fluid (CSF)
- the CSF between bone and brain goes down through with circulatory system and collects
waste during sleep
sleep and plasticity - CORRECT ANSWER >>>-During sleep, proteins related to brain plasticity
and learning are released
-sleep makes brain more plastic
◦Brain plasticity is the ability to change and reorganize itself across time
hypotheses for how media relates to sleep (2) - CORRECT ANSWER >>>-Quantity hypothesis -
Quality hypothesis
4|Page
WELL ACED
Sleep mediator study looks at - CORRECT ANSWER >>>- tests the direct relations between
media exposure, sleep and various health outcome (attention, agressions, and BMI and the
indirect effect of media exposure through sleep disturbances
past research BMI and media - CORRECT ANSWER >>>have found small but significant positve
Rs between the amount of media girls use and their BMI and fat mass
sleep on BMI study - CORRECT ANSWER >>>-Longitudinal study of over 1000 individuals from
age 3 to 32
- people who sleep less have higher BMI
-perists thru adulthood
-Controlling for early childhood BMI, SES, parent BMI, child and adult television viewing,
physical activity, smoking
displacement hypothesis - CORRECT ANSWER >>>- screen time may replace more physically
active activities or sleep time
sleep benefits for children - CORRECT ANSWER >>>- energy
- weight maintenance
- synaptic and cognitive development
past research media and sleep - CORRECT ANSWER >>>- media can disturb sleep
- is related to sleeping fewer hours and feeling more tired throughout the day
1|Page
,past research sleep and obesity - CORRECT ANSWER >>>- sleep on decline as childhood obesity
goes up
- sleep restrictions predict childhood obesity
- negative R between sleep duration and obesity
- shortr sleep time significantly and negatively predicted adults BMI at age 32 even when
controlling for other Vs
young adults - CORRECT ANSWER >>>16-25
adolescence - CORRECT ANSWER >>>13-17
middle childhood - CORRECT ANSWER >>>8-12
children - CORRECT ANSWER >>>2-7
infants - CORRECT ANSWER >>>0-1
Children and adolescents as special populations (5) - CORRECT ANSWER >>>- What can
they/can they not do?
-differences influence how children and adolescents use media, and how they are influenced by
media
-physical development
-Cognitive Development
-socio-emotional development
past research attention problems sleep and media use - CORRECT ANSWER >>>
2|Page
,Physical Development (3) - CORRECT ANSWER >>>Children grow and get stronger- ◦Influences
actions they can imitate from media (ex cannot mimic fight scene)
Motor development increases- ◦Better able to use a mouse, or play a video game (Ex touch and
drag0
Puberty- ◦ Changes in hormones; adolescents become interested in more intimate relationships,
body changes
Cognitve Development (4) - CORRECT ANSWER >>>-Growth in working memory- ◦Influences
comprehension and ability to multitask, manipuate different pieces of info at once
-Perspective-taking
-Understanding of transformations and more complex thought processes ex conservation of
liquid, objects ~6yrs
-Executive functioning (mental control and self-regulation) ex watching lecture vs fun stuff
socio-emotional development (4) - CORRECT ANSWER >>>-Growing importance of peer groups
and maintenance of group functioning - group consumes same media
-Identity development ex I am a person who watches this show, I am a person who has this
device
-Growth of empathy, sympathy, and altruism ex lil boy understood his art was bad and they did
not like it
-Growth of ability to recognize emotions
how much energy for brain - CORRECT ANSWER >>>-1/4 of energy and nutrients way more than
other organs
- brain does a lot when it is awake
brain cleaning - CORRECT ANSWER >>>- takes 9 hours to fully clean but some sleep = some
cleaning
3|Page
, -
how to get nutrients to brain? - CORRECT ANSWER >>>- circulatory system surrounds and gets
thru brain
stroke risk and sleep - CORRECT ANSWER >>>- less than 6 hours increases stoke risk
glmphatic system - CORRECT ANSWER >>>CSF
percentage of sleep deprived - CORRECT ANSWER >>>- 30% of adults
- 63% of adoles
Adenosine - CORRECT ANSWER >>>sleep pressure
how to get rid of brain waste? - CORRECT ANSWER >>>-lymphatic system collects proteins
and waste and disposes of it but this does not cover the brain (neck down) - so brain makes
use of the exsisiting system: the cerebral spinal fluid (CSF)
- the CSF between bone and brain goes down through with circulatory system and collects
waste during sleep
sleep and plasticity - CORRECT ANSWER >>>-During sleep, proteins related to brain plasticity
and learning are released
-sleep makes brain more plastic
◦Brain plasticity is the ability to change and reorganize itself across time
hypotheses for how media relates to sleep (2) - CORRECT ANSWER >>>-Quantity hypothesis -
Quality hypothesis
4|Page
