Difficulty: Beginner | Prerequisites: None
Screen addiction in children is driven by prolonged study habits on devices and the normalisation of constant screen use in family life. The effects include physical problems (eye strain, neck and back pain) and disrupted sleep, which in turn harms school performance and mental health. Two practical solutions are removing screens from mealtimes and keeping devices out of bedrooms at night.
Screen addiction
A pattern of compulsive, excessive use of electronic devices (phones, tablets, laptops) that interferes with daily functioning, sleep, or physical health. In simple terms, it is when a child cannot stop using screens even when it is causing them harm.
Screen time
The total amount of time spent looking at any electronic screen, whether for study, entertainment, or social interaction. Think of it as the running clock from the moment a device switches on until it goes off.
Expository essay
A form of academic writing that explains or informs without arguing a position. The writer presents causes, effects, and solutions supported by evidence, rather than persuading the reader to take a side.
Thesis statement
A single sentence, usually at the end of the introduction, that states the essay's central claim and previews its main points. Think of it as the essay's promise to the reader: here is what I will cover.
Credible source
A source whose author, publisher, or institution is recognised as knowledgeable and trustworthy on the topic. Medical centres (Mayo Clinic), professional bodies (AAP), and peer-reviewed journals (PubMed/PMC) are standard examples.
Hook (in essay writing)
The opening sentence or question designed to capture the reader's attention before the thesis appears. In simple terms, it is the bait that makes someone keep reading.
Bridging statement
The sentence(s) between the hook and the thesis that narrow the topic and connect the attention-grabber to the essay's specific focus.
Children and teens commonly study by sitting on a bed or floor with a tablet or laptop for hours at a stretch (Hahn & Katzenstein, "Screen Time Side Effects in Kids and Teens").
Because schoolwork now requires a screen, children accumulate screen hours even when they are not choosing entertainment. The device needed for homework becomes the device used for everything else.
This blurs the line between productive and recreational screen use, making overall screen time harder to control.
Children are not only spending more time on their own screens; they are also watching the adults and older siblings around them use screens constantly (Hahn & Katzenstein).
When screens are visible and in use throughout the household, children absorb the message that constant device use is normal behaviour.
Even a child who is not personally holding a device is exposed to screen content through other family members, which reinforces the habit loop.
Excessive screen time causes eye strain, neck and shoulder pain, and back pain (Devi & Singh, "The Hazards of Excessive Screen Time," PMC).
These problems worsen over time if the habit continues unchecked. Because screens are now part of everyday life for most people, the risk is widespread, not limited to heavy gamers or social-media users.
Poor posture during long screen sessions compounds the issue, especially for children whose musculoskeletal systems are still developing.
Insufficient sleep has a negative impact on a child's school performance and mental health (AAP, "Screen Time Affecting Sleep").
Blue light from screens suppresses melatonin production, making it harder to fall asleep. Children who use devices close to bedtime tend to sleep less and sleep worse.
Tired children struggle to concentrate, retain information, and regulate their emotions during the school day, creating a cycle where poor sleep leads to poorer outcomes across the board.
Allowing a child to eat or snack in front of an electronic device increases total screen time (Christensen, "Children and Screen Time: How Much Is Too Much?", Mayo Clinic Health System).
Banning devices at the table cuts passive screen hours and creates a natural break in the day. It also opens space for face-to-face family conversation, which supports social development and mental health.
This is a low-effort change that requires no technology or cost, only a household rule.
Maintaining a consistent bedtime routine and keeping phones and screens out of the child's bedroom at night directly protects sleep quality (AAP, "Screen Time Affecting Sleep").
Short-form video and social feeds are designed to hold attention, making it especially hard for children to self-regulate once a device is in the room.
Better sleep leads to better concentration, improved mood, and stronger academic performance, reversing several of the negative effects described above.
"Screen addiction only affects kids who play video games." It does not. Any prolonged, compulsive screen use counts, including studying on a laptop, scrolling social media, or watching short-form video.
"If the screen time is educational, it cannot be harmful." Educational content still exposes children to the same physical and sleep-related risks. The screen does not distinguish between a maths app and a game when it comes to eye strain or blue-light exposure.
"Children will naturally outgrow excessive screen use." Habits formed in childhood tend to persist. Without deliberate intervention (household rules, environmental changes), screen-dependent routines often carry into adolescence and adulthood.
"Only the child holding the device is affected." Children absorb screen culture from the people around them. A household where adults are constantly on their phones normalises the behaviour for children who are not even using a device themselves.
The essay prompt asks you to explain, not argue. An expository essay presents information neutrally. If your writing starts to sound like a persuasive essay ("we must," "everyone should"), you have drifted off the assignment.
You need at least three credible sources. The research organiser in the assignment uses sources from Johns Hopkins/All Children's Hospital, PubMed (NIH), the AAP, and Mayo Clinic Health System. These are strong, credible medical or professional sources.
The rubric rewards thorough explanation of how each cause, effect, and solution connects to the problem. Listing a fact without explaining the link between it and screen addiction will cost marks.
The introduction must contain all three parts: hook, bridging statement, and thesis statement. Missing any one of them drops the Introduction score from the top band.
Grammar and mechanics carry their own 5-point section. Proofread for spelling ("Affacing" should be "Affecting"; "beind" should be "being"; "lose" should be "loss") and sentence fragments.
True or False: An expository essay argues in favour of one solution to a problem.
Fill in the blank: The two main physical effects of excessive screen time mentioned in the research are eye strain and ______ pain.
True or False: A child can be exposed to excessive screen culture even without personally using a device.
Fill in the blank: The three parts of an expository essay introduction are the hook, the bridging statement, and the ______ statement.
True or False: Using a screen for educational purposes eliminates the risk of physical side effects.
Q: Name two causes of screen addiction in children, according to the research.
A: (1) Children develop study habits that keep them on tablets or laptops for hours, blurring the line between academic and recreational screen use. (2) Children observe the adults and siblings around them using screens constantly, which normalises the behaviour.
Q: What are two physical effects of excessive screen time?
A: Eye strain and musculoskeletal pain (neck, shoulder, and back pain), as identified by Devi and Singh in their PMC review.
Q: How does screen use before bed affect a child's school performance?
A: Screen use before bed disrupts sleep by suppressing melatonin. Poor sleep reduces concentration, memory retention, and emotional regulation the following day, all of which lower academic performance.
Q: Explain one proposed solution and how it addresses the problem.
A: Removing screens from the bedroom at night protects the child's bedtime routine. Without a device in the room, the temptation to scroll or watch videos is removed, leading to better sleep quality and, in turn, improved daytime functioning.
Q: What is the difference between an expository essay and a persuasive essay?
A: An expository essay explains and informs by presenting causes, effects, and solutions with evidence. A persuasive essay argues for a particular position and tries to convince the reader to agree.
This material connects to child development and psychology, where the effects of screen time on attention span, social skills, and emotional regulation are studied in more depth. It also ties into public health policy, since organisations like the AAP and WHO publish screen-time guidelines for different age groups. If you study media literacy later, the idea that children absorb behaviour from the screens around them (not just the ones they hold) is a recurring theme.
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