Featured Research

from universities, journals, and other organizations

Limiting screen time improves sleep, academics, behavior, study finds

Date:
March 31, 2014
Source:
Iowa State University
Summary:
Parents may not always see it, but efforts to limit their children’s screen time can make a difference. A new study found children get more sleep, do better in school and see other health benefits when parents monitor screen time. The effect is not immediate and that makes it difficult for parents to recognize. As a result, parents may think it is not worth the effort to monitor and limit their children's media use. But researchers say they have more power than they realize.

Parents may not always see it, but efforts to limit their children's screen time can make a difference. A new study, published in JAMA Pediatrics, found children get more sleep, do better in school, behave better and see other health benefits when parents limit content and the amount of time their children spend on the computer or in front of the TV.

Douglas Gentile, lead author and an associate professor of psychology at Iowa State, says the effect is not immediate and that makes it difficult for parents to recognize. As a result, parents may think it is not worth the effort to monitor and limit their children's media use. But Gentile says they have more power than they realize.

"When parents are involved it has a powerful protective effect across a wide range of different areas that they probably never would have expected to see," Gentile said. "However, parents aren't likely to notice that putting limits on the children's media is having these effects seven months later."

Considering that children average more than 40 hours of screen time a week, not counting time spent on a computer at school, even small changes can make a difference, researchers said. They are not suggesting parents completely eliminate screen time, but find a healthy balance.

The study found there is a ripple effect associated with the benefits of limiting both screen time and media content. Gentile is not surprised to see a direct impact on sleep, academics and behavior. However, limited screen time also indirectly affects body mass index. The study found that children got more sleep if parents limited screen time, which also resulted in lower risk of obesity. Parents limiting exposure to violent media resulted in increased prosocial behavior and lowered aggressive behavior seven months later.

Researchers analyzed the media habits of more than 1,300 school children who were recruited to participate in an obesity prevention program. Students and parents were surveyed about everything from screen time limits, to violent media exposure, to bedtimes and behavior. Teachers reported grades and commented on student behavior and school nurses measured each student's height and weight.

Data were collected at the start of the program and seven months later at the end of the program. By looking at these factors collectively with a group of children over a school year, it was easier for researchers to identify patterns that are hard to recognize in individual children.

"As parents, we don't even see our children get taller and that's a really noticeable effect. With media, what we're often looking for is the absence of a problem, such as a child not gaining weight, making it even more difficult to notice," Gentile said.

"Even with changes that we do notice, we really don't recognize in the moment how all these things are related to each other across time," he added. "Yes, as screen time goes up, school performance goes down, but that doesn't happen overnight. If I watch a lot of TV today, I don't get an F in my class tomorrow."

Doctors can make a difference, too

The American Association of Pediatrics recommends no more than one to two hours of screen time a day for children two years and older. Reality far exceeds those recommendations, which might explain why doctors feel it is futile to talk with parents about guidelines for media use, Gentile said. The study provides further evidence of why pediatricians need to have that conversation.

"Hopefully, this study will give pediatricians a better sense of efficacy that it's worth taking the time to talk to parents," Gentile said. "Even if doctors only influence 10 percent of the parents, that's still millions of children having much better health outcomes as a result."

Researchers recommend doctors talk with parents about setting limits and actively monitoring media use. This can include talking with children about media content, explaining the purpose of various media and providing overall guidance.


Story Source:

The above story is based on materials provided by Iowa State University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Douglas A. Gentile, Rachel A. Reimer, Amy I. Nathanson, David A. Walsh, Joey C. Eisenmann. Protective Effects of Parental Monitoring of Children’s Media Use. JAMA Pediatrics, 2014; DOI: 10.1001/jamapediatrics.2014.146

Cite This Page:

Iowa State University. "Limiting screen time improves sleep, academics, behavior, study finds." ScienceDaily. ScienceDaily, 31 March 2014. <www.sciencedaily.com/releases/2014/03/140331170414.htm>.
Iowa State University. (2014, March 31). Limiting screen time improves sleep, academics, behavior, study finds. ScienceDaily. Retrieved August 22, 2014 from www.sciencedaily.com/releases/2014/03/140331170414.htm
Iowa State University. "Limiting screen time improves sleep, academics, behavior, study finds." ScienceDaily. www.sciencedaily.com/releases/2014/03/140331170414.htm (accessed August 22, 2014).

Share This




More Mind & Brain News

Friday, August 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Lost Brain Cells To Blame For Sleep Problems Among Seniors

Lost Brain Cells To Blame For Sleep Problems Among Seniors

Newsy (Aug. 21, 2014) According to a new study, elderly people might have trouble sleeping because of the loss of a certain group of neurons in the brain. Video provided by Newsy
Powered by NewsLook.com
Do More Wedding Guests Make A Happier Marriage?

Do More Wedding Guests Make A Happier Marriage?

Newsy (Aug. 20, 2014) A new study found couples who had at least 150 guests at their weddings were more likely to report being happy in their marriages. Video provided by Newsy
Powered by NewsLook.com
Charter Schools Alter Post-Katrina Landscape

Charter Schools Alter Post-Katrina Landscape

AP (Aug. 20, 2014) Nine years after Hurricane Katrina, charter schools are the new reality of public education in New Orleans. The state of Louisiana took over most of the city's public schools after the killer storm in 2005. (Aug. 20) Video provided by AP
Powered by NewsLook.com
Researcher Testing on-Field Concussion Scanners

Researcher Testing on-Field Concussion Scanners

AP (Aug. 19, 2014) Four Texas high school football programs are trying out an experimental system designed to diagnose concussions on the field. The technology is in response to growing concern over head trauma in America's most watched sport. (Aug. 19) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins