home
RSS
Do violent movies, games make teens aggressive?
October 18th, 2010
07:15 PM ET

Do violent movies, games make teens aggressive?

Watching violence portrayed in movies and other media may make teens more accepting of violence, researchers report in the journal Social Cognitive and Affective Neuroscience.

Previous research has shown a connection between violent media and aggression, as well as violence and desensitization. But this study looks at how teenagers' brains specifically respond to violent media, said Jordan Grafman, senior investigator at the National Institute of Neurological Disorders and Stroke.

Participants in the study were 22 boys ages 14 to 17. For that reason, researchers cannot determine whether the brain patterns they observed would also apply to girls. This is also a small sample size, meaning more research should be done to confirm the results.

Each participant watched clips of violent scenes from 60 different videos, which included movies such as "World's Wildest Street Fights Vol. 1 and 2," Grafman said, and rated the aggression of the scenes. Researchers could observe their brain function because each boy watched these scenes while in a functional magnetic resonance imaging (fMRI) scanner.

These brain images showed that more aggressive violence was associated with desensitization in the lateral orbitofrontal cortex of the brain, which scientists believe has to do with emotions and emotional responses to events. They measured this by looking at the deoxygenation of blood in this area of the brain and how it changes over time.

Participants also wore electrodes on the fingers of one hand to measure the electrical conductance of the skin, which indicates emotion. This was used to look at how desensitized the boys were to different videos, depending on the level of violence. This electrical conductance test showed that the boys appeared to be more desensitized by the mildly and moderately violent videos than the ones with a low-level of violence.

Boys who had the greatest level of exposure to violent media routinely showed the greatest desensitization in this study.

If you already have a predisposition toward violence, based on your home  life and genetics, and are exposing yourself to violent media, "the risk would go up for being, first, accepting of violent or aggressive behavior around you, which be often as devastating as actually committing the act, or potentially being more easily provoked," Grafman said.

That assessment does not apply to these individual children in the study, but it's the study's broader message, he said.

"Sometimes people just call these 'games,' but imagine if you're doing this three hours a day, four hours a day; it's not just 'games,' it's your environment, he said."

Although the study did not directly address the issue of violence in video games, previous research found that "emotional desensitization had been associated with children’s exposure to violent video games and adults' self-reported reduced sympathy with victims in violent movie scenes," Grafman's study said.

But there may be a flip side to video games with some degree of violence. A September study in the journal Current Biology found that participants ages 18 to 25 could make faster decisions that were no less accurate after playing action games such as "Call of Duty 2" and "Unreal Tournament," which are first-person shooter games.

The lesson from that is not to carve out as much time for video games as you can, said Alexandre Pouget of the University of Rochester,  co-author of the Current Biology paper. Rather, exploring how video games help with quick thinking can translate into educational tools and games that more effectively teach useful skills, he said.

For children over 6 years of age, pediatricians recommend no more than two hours of screen time per day, said Dr. Jennifer Shu, CNNHealth living well expert. But some studies have shown that, in practice, many kids spend about 7 hours a day in front of some kind of screen, including smart phones.

Parents should put limits on-screen time, she said. It's a cause for concern if a child becomes hyperactive, has attention problems, doesn't sleep well or get enough exercise because of things like video games and television.


soundoff (661 Responses)
  1. GvdbCrulk

    tadalafil walmart http://boxtadafil.com/ – c-tadalafil tadalafil mechanism

    April 28, 2021 at 01:54 | Report abuse | Reply
  2. best sildenafil pills

    200 mg sildenafil https://eunicesildenafilcitrate.com/ buy sildenafil with visa

    April 28, 2021 at 03:02 | Report abuse | Reply
  3. FbsfEncox

    ed drugs https://uspharmus.com/ Grifulvin V

    April 28, 2021 at 15:33 | Report abuse | Reply
  4. BbdfMile

    best time to take viagra http://gensitecil.com/ viagra pill picture

    April 28, 2021 at 22:06 | Report abuse | Reply
  5. GvdbCrulk

    generic tadalafil canada https://boxtadafil.com/ tadalafil powder bulk

    April 29, 2021 at 06:03 | Report abuse | Reply
  6. cialis canadian

    canadian pharmacy no perscription generic cialis https://canadacialisstore.com/ counterfeit canadian drugs cialis

    April 29, 2021 at 07:21 | Report abuse | Reply
  7. https://www.songmanhits.com

    Best view i have ever seen !

    https://maps.google.com.pg/url?q=https://www.songmanhits.com

    April 29, 2021 at 13:27 | Report abuse | Reply
  8. canadian pharmacies ed pills

    canadian customs pills vitamins https://canadapillstorex.com/ canadian pharmacies ed pills

    April 30, 2021 at 07:02 | Report abuse | Reply
  9. RfvbZisse

    cialis one a day with dapoxetine canada https://cileve.com/ cialis online with no prescription

    April 30, 2021 at 13:06 | Report abuse | Reply
  10. chloroquine australia

    chloroquinr https://chloroquineorigin.com/ chloroquine phosphate vs chloroquine sulphate

    April 30, 2021 at 22:38 | Report abuse | Reply
  11. LhdvZisse

    cialis with no prescrption https://asciled.com/ dapoxetine and cialis

    May 1, 2021 at 01:57 | Report abuse | Reply
  12. RfvbZisse

    cialis supr active https://cileve.com/ – cialis black 800 cialis20mg online

    May 1, 2021 at 03:32 | Report abuse | Reply
  13. Darius Helgerson

    Oh my goodness! Impressive article dude! Thanks, However I am having troubles with your RSS. I don’t understand why I cannot join it. Is there anybody getting the same RSS problems? Anyone that knows the solution will you kindly respond? Thanks!!

    https://extraproxies.com/buy-proxies/2000-proxy-pack/

    May 1, 2021 at 05:30 | Report abuse | Reply
  14. JbsdEncox

    northwest pharmacy canada best online pharmacy stores canadian online pharmacy

    May 1, 2021 at 06:22 | Report abuse | Reply
  15. AbdgEncox

    Olanzapine http://canadianeve21.com/ Tadapox

    May 1, 2021 at 07:59 | Report abuse | Reply
  16. LrbsEncox

    levitra tab no prescription levitra levitra on line sales

    May 1, 2021 at 08:12 | Report abuse | Reply
  17. AbdgEncox

    Glycomet http://canadianeve21.com/ best 10 online canadian pharmacies

    May 1, 2021 at 19:22 | Report abuse | Reply
  18. LrbsEncox

    generic for levitra levitra bestellen levitra price walgreens

    May 2, 2021 at 03:04 | Report abuse | Reply
  19. canadian diet pills

    canadian customs pills vitamins https://canadapillstorex.com/ canadian pharmacies ed pills

    May 2, 2021 at 06:52 | Report abuse | Reply
  20. cialis viagra combination canadian pharmacy

    how can i order cialis from a canadian pharmacy https://canadacialisstore.com/ canadian viagra cialis

    May 2, 2021 at 08:04 | Report abuse | Reply
  21. erectile

    top erectile pills https://canadaerectiledysfunctionpills.com/ erectile brokenness

    May 2, 2021 at 11:15 | Report abuse | Reply
  22. pfizer viagra canada pharmistry

    best viagra pills 25 mg canada pharmacy https://canadaviagrastore.com/ viagra from canada

    May 2, 2021 at 14:28 | Report abuse | Reply
  23. average perscription pills taken by 65 year old canadian?

    canadian generic pills https://canadapillstorex.com/ canadian diet pills

    May 2, 2021 at 14:51 | Report abuse | Reply
  24. JbsdEncox

    pharmacy on line https://onlinecanda21.com/ canadian prescriptions

    May 3, 2021 at 04:20 | Report abuse | Reply
  25. tendances du coronavirus - france

    choloroquine https://chloroquineorigin.com/ chloroquine vs chloroquine phosphate

    May 3, 2021 at 23:43 | Report abuse | Reply
  26. AnooEncox

    cialis viagra v s http://llviagra.com/ – viagra comeГ§a a fazer efeito otc viagra australia

    May 4, 2021 at 06:35 | Report abuse | Reply
  27. JebgEncox

    canadian drugstore https://pharmacylo.com/ bitcoin pharmacy online

    May 4, 2021 at 14:34 | Report abuse | Reply
  28. BbshMile

    how to get viagra online http://loxviagra.com/ – is there viagra for women viagra triangle chicago

    May 4, 2021 at 14:34 | Report abuse | Reply
  29. avanafil

    avana 50 mg avanafil 50

    May 4, 2021 at 15:18 | Report abuse | Reply
  30. RV Technician California

    http://www.spb-vuz.ru/rd?u=ocrvcenter.co

    May 4, 2021 at 15:42 | Report abuse | Reply
  31. LebnEncox

    Kamagra Polo https://xlnpharmacy.com/ discount drugs online pharmacy

    May 4, 2021 at 16:03 | Report abuse | Reply
  32. executive coach near me

    https://clients1.google.kz/url?q=j&sa=t&url=https://mastermindformen.com

    May 4, 2021 at 16:18 | Report abuse | Reply
  33. truck tire repair

    An outstanding share! I have just forwarded this onto a friend who had been doing a little homework on this. And he actually ordered me lunch simply because I discovered it for him... lol. So let me reword this.... Thanks for the meal!! But yeah, thanx for spending the time to talk about this matter here on your site.

    https://google.gl/url?sa=i&rct=j&url=https3A2F2Ffleetservicesocrv.com&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg

    May 4, 2021 at 17:09 | Report abuse | Reply
  34. AnooEncox

    acquistare viagra on line ГЁ sicuro https://llviagra.com/ pfizer viagra 100mg side effects

    May 4, 2021 at 19:08 | Report abuse | Reply
  35. online leadership training

    http://r.turn.com/r/click?id=07SbPf7hZSNdJAgAAAYBAA&url=https://mastermindofmen.com

    May 4, 2021 at 20:07 | Report abuse | Reply
  36. RebfZisse

    generic cialis http://rcialisgl.com/ – cialis canada and paypal generic cialis pay pal

    May 4, 2021 at 20:32 | Report abuse | Reply
  37. big truck repair shops near me

    http://www.local.google.hu/url?rct=j&sa=t&url=https://commercialvanrepairshop.com

    May 5, 2021 at 03:24 | Report abuse | Reply
  38. modvans

    Good post. I learn something new and challenging on websites I stumbleupon on a daily basis. It will always be helpful to read through content from other authors and practice something from their web sites.

    https://google.com.hk/url?sa=j&source=web&rct=j&url=https3A2F2Ffleetautorepairshop.com&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg

    May 5, 2021 at 04:42 | Report abuse | Reply
  39. LebnEncox

    Biltricide https://xlnpharmacy.com/ Eskalith

    May 5, 2021 at 06:51 | Report abuse | Reply
  40. LbsoZisse

    cialis vs viagra vs kamagra http://ucialisdas.com/ – generic cialis sale best online to buy cialis

    May 5, 2021 at 06:58 | Report abuse | Reply
  41. RebfZisse

    genereic cialis https://rcialisgl.com/ – discount cialis from india cialis black to buy in the uk

    May 5, 2021 at 08:05 | Report abuse | Reply
  42. RV Dashboard Riverside

    https://map.google.gp/url?q=https3A2F2Foc-rv.com&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg

    May 5, 2021 at 08:14 | Report abuse | Reply
  43. aika private server files download

    https://images.google.gr/url?sa=j&rct=j&url=https://aikareborn.com

    May 5, 2021 at 09:01 | Report abuse | Reply
  44. aika online private server download

    http://daniellavelloso.com.br/?wptouch_switch=mobile&redirect=http3A2F2Faikareborn.com

    May 5, 2021 at 09:03 | Report abuse | Reply
  45. Lasik Phoenix

    https://www.myauto.by/away.php?url=https://arizonasvision.com

    May 5, 2021 at 09:48 | Report abuse | Reply
  46. online health training

    https://clients1.google.co.id/url?q=j&source=web&rct=j&url=https3A2F2Fmastermindformen.com&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg

    May 5, 2021 at 10:47 | Report abuse | Reply
  47. aika online

    Howdy! This article couldn’t be written any better! Looking through this post reminds me of my previous roommate! He always kept talking about this. I'll forward this post to him. Pretty sure he'll have a great read. Many thanks for sharing!

    https://local.google.pl/url?sa=j&source=web&rct=j&url=https://aikareborn.com

    May 5, 2021 at 13:11 | Report abuse | Reply
  48. warehouse jobs near me

    http://sportkholmsk.admkholmsk.ru/redirect?url=https://ocrvmotorcoachsales.com

    May 5, 2021 at 19:32 | Report abuse | Reply
  49. RV Windows California

    https://image.google.com.nf/url?sa=i&rct=j&url=https3A2F2Focrv.life&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg

    May 5, 2021 at 23:20 | Report abuse | Reply
  50. RV Bedroom Riverside

    bookmarked!!, I really like your website!

    https://www.academia-moscow.ru/bitrix/redirect.php?event1=&event2=&event3=&goto=https://ocrv.online

    May 6, 2021 at 00:07 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13

Post a comment


 

CNN welcomes a lively and courteous discussion as long as you follow the Rules of Conduct set forth in our Terms of Service. Comments are not pre-screened before they post. You agree that anything you post may be used, along with your name and profile picture, in accordance with our Privacy Policy and the license you have granted pursuant to our Terms of Service.

Advertisement
About this blog

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.