Your brain on video games | Daphne Bavelier
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Your brain on video games | Daphne Bavelier

August 22, 2019

Translator: Joseph Geni
Reviewer: Morton Bast I’m a brain scientist, and as a brain scientist, I’m actually interested in how the brain learns, and I’m especially interested in a possibility of making our brains smarter, better and faster. This is in this context I’m going to tell you about video games. When we say video games, most of you think about children. It’s true. Ninety percent of children do play video games. But let’s be frank. When the kids are in bed, who is in front of the PlayStation? Most of you. The average age of a gamer is 33 years old, not eight years old, and in fact, if we look at the projected demographics of video game play, the video game players of tomorrow are older adults. (Laughter) So video [gaming] is pervasive throughout our society. It is clearly here to stay. It has an amazing impact on our everyday life. Consider these statistics released by Activision. After one month of release of the game “Call Of Duty: Black Ops,” it had been played for 68,000 years worldwide, right? Would any of you complain if this was the case about doing linear algebra? So what we are asking in the lab is, how can we leverage that power? Now I want to step back a bit. I know most of you have had the experience of coming back home and finding your kids playing these kinds of games. (Shooting noises) The name of the game is to get after your enemy zombie bad guys before they get to you, right? And I’m almost sure most of you have thought, “Oh, come on, can’t you do something more intelligent than shooting at zombies?” I’d like you to put this kind of knee-jerk reaction in the context of what you would have thought if you had found your girl playing sudoku or your boy reading Shakespeare. Right? Most parents would find that great. Well, I’m not going to tell you that playing video games days in and days out is actually good for your health. It’s not, and binging is never good. But I’m going to argue that in reasonable doses, actually the very game I showed you at the beginning, those action-packed shooter games have quite powerful effects and positive effects on many different aspects of our behavior. There’s not one week that goes without some major headlines in the media about whether video games are good or bad for you, right? You’re all bombarded with that. I’d like to put this kind of Friday night bar discussion aside and get you to actually step into the lab. What we do in the lab is actually measure directly, in a quantitative fashion, what is the impact of video games on the brain. And so I’m going to take a few examples from our work. One first saying that I’m sure you all have heard is the fact that too much screen time makes your eyesight worse. That’s a statement about vision. There may be vision scientists among you. We actually know how to test that statement. We can step into the lab and measure how good your vision is. Well, guess what? People that don’t play a lot of action games, that don’t actually spend a lot of time in front of screens, have normal, or what we call corrective-to-normal vision. That’s okay. The issue is what happens with these guys that actually indulge into playing video games like five hours per week, 10 hours per week, 15 hours per week. By that statement, their vision should be really bad, right? Guess what? Their vision is really, really good. It’s better than those that don’t play. And it’s better in two different ways. The first way is that they’re actually able to resolve small detail in the context of clutter, and though that means being able to read the fine print on a prescription rather than using magnifier glasses, you can actually do it with just your eyesight. The other way that they are better is actually being able to resolve different levels of gray. Imagine you’re driving in a fog. That makes a difference between seeing the car in front of you and avoiding the accident, or getting into an accident. So we’re actually leveraging that work to develop games for patients with low vision, and to have an impact on retraining their brain to see better. Clearly, when it comes to action video games, screen time doesn’t make your eyesight worse. Another saying that I’m sure you have all heard around: Video games lead to attention problems and greater distractability. Okay, we know how to measure attention in the lab. I’m actually going to give you an example of how we do so. I’m going to ask you to participate, so you’re going to have to actually play the game with me. I’m going to show you colored words. I want you to shout out the color of the ink. Right? So this is the first example. [“Chair”] Orange, good. [“Table”] Green. [“Board”] Audience: Red.Daphne Bavelier: Red. [“Horse”] DB: Yellow. Audience: Yellow. [“Yellow”] DB: Red. Audience: Yellow. [“Blue”] DB: Yellow. Okay, you get my point, right? (Laughter) You’re getting better, but it’s hard. Why is it hard? Because I introduced a conflict between the word itself and its color. How good your attention is determines actually how fast you resolve that conflict, so the young guys here at the top of their game probably, like, did a little better than some of us that are older. What we can show is that when you do this kind of task with people that play a lot of action games, they actually resolve the conflict faster. So clearly playing those action games doesn’t lead to attention problems. Actually, those action video game players have many other advantages in terms of attention, and one aspect of attention which is also improved for the better is our ability to track objects around in the world. This is something we use all the time. When you’re driving, you’re tracking, keeping track of the cars around you. You’re also keeping track of the pedestrian, the running dog, and that’s how you can actually be safe driving, right? In the lab, we get people to come to the lab, sit in front of a computer screen, and we give them little tasks that I’m going to get you to do again. You’re going to see yellow happy faces and a few sad blue faces. These are children in the schoolyard in Geneva during a recess during the winter. Most kids are happy. It’s actually recess. But a few kids are sad and blue because they’ve forgotten their coat. Everybody begins to move around, and your task is to keep track of who had a coat at the beginning and who didn’t. So I’m just going to show you an example where there is only one sad kid. It’s easy because you can actually track it with your eyes. You can track, you can track, and then when it stops, and there is a question mark, and I ask you, did this kid have a coat or not? Was it yellow initially or blue? I hear a few yellow. Good. So most of you have a brain. (Laughter) I’m now going to ask you to do the task, but now with a little more challenging task. There are going to be three of them that are blue. Don’t move your eyes. Please don’t move your eyes. Keep your eyes fixated and expand, pull your attention. That’s the only way you can actually do it. If you move your eyes, you’re doomed. Yellow or blue? Audience: Yellow.DB: Good. So your typical normal young adult can have a span of about three or four objects of attention. That’s what we just did. Your action video game player has a span of about six to seven objects of attention, which is what is shown in this video here. That’s for you guys, action video game players. A bit more challenging, right? (Laughter) Yellow or blue? Blue. We have some people that are serious out there. Yeah. (Laughter) Good. So in the same way that we actually see the effects of video games on people’s behavior, we can use brain imaging and look at the impact of video games on the brain, and we do find many changes, but the main changes are actually to the brain networks that control attention. So one part is the parietal cortex which is very well known to control the orientation of attention. The other one is the frontal lobe, which controls how we sustain attention, and another one is the anterior cingulate, which controls how we allocate and regulate attention and resolve conflict. Now, when we do brain imaging, we find that all three of these networks are actually much more efficient in people that play action games. This actually leads me to a rather counterintuitive finding in the literature about technology and the brain. You all know about multitasking. You all have been faulty of multitasking when you’re driving and you pick up your cellphone. Bad idea. Very bad idea. Why? Because as your attention shifts to your cell phone, you are actually losing the capacity to react swiftly to the car braking in front of you, and so you’re much more likely to get engaged into a car accident. Now, we can measure that kind of skills in the lab. We obviously don’t ask people to drive around and see how many car accidents they have. That would be a little costly proposition. But we design tasks on the computer where we can measure, to millisecond accuracy, how good they are at switching from one task to another. When we do that, we actually find that people that play a lot of action games are really, really good. They switch really fast, very swiftly. They pay a very small cost. Now I’d like you to remember that result, and put it in the context of another group of technology users, a group which is actually much revered by society, which are people that engage in multimedia-tasking. What is multimedia-tasking? It’s the fact that most of us, most of our children, are engaged with listening to music at the same time as they’re doing search on the web at the same time as they’re chatting on Facebook with their friends. That’s a multimedia-tasker. There was a first study done by colleagues at Stanford and that we replicated that showed that those people that identify as being high multimedia-taskers are absolutely abysmal at multitasking. When we measure them in the lab, they’re really bad. Right? So these kinds of results really makes two main points. The first one is that not all media are created equal. You can’t compare the effect of multimedia-tasking and the effect of playing action games. They have totally different effects on different aspects of cognition, perception and attention. Even within video games, I’m telling you right now about these action-packed video games. Different video games have a different effect on your brains. So we actually need to step into the lab and really measure what is the effect of each video game. The other lesson is that general wisdom carries no weight. I showed that to you already, like we looked at the fact that despite a lot of screen time, those action gamers have a lot of very good vision, etc. Here, what was really striking is that these undergraduates that actually report engaging in a lot of high multimedia-tasking are convinced they aced the test. So you show them their data, you show them they are bad and they’re like, “Not possible.” You know, they have this sort of gut feeling that, really, they are doing really, really good. That’s another argument for why we need to step into the lab and really measure the impact of technology on the brain. Now in a sense, when we think about the effect of video games on the brain, it’s very similar to the effect of wine on the health. There are some very poor uses of wine. There are some very poor uses of video games. But when consumed in reasonable doses, and at the right age, wine can be very good for health. There are actually specific molecules that have been identified in red wine as leading to greater life expectancy. So it’s the same way, like those action video games have a number of ingredients that are actually really powerful for brain plasticity, learning, attention, vision, etc., and so we need and we’re working on understanding what are those active ingredients so that we can really then leverage them to deliver better games, either for education or for rehabilitation of patients. Now because we are interested in having an impact for education or rehabilitation of patients, we are actually not that interested in how those of you that choose to play video games for many hours on end perform. I’m much more interested in taking any of you and showing that by forcing you to play an action game, I can actually change your vision for the better, whether you want to play that action game or not, right? That’s the point of rehabilitation or education. Most of the kids don’t go to school saying, “Great, two hours of math!” So that’s really the crux of the research, and to do that, we need to go one more step. And one more step is to do training studies. So let me illustrate that step with a task which is called mental rotation. Mental rotation is a task where I’m going to ask you, and again you’re going to do the task, to look at this shape. Study it, it’s a target shape, and I’m going to present to you four different shapes. One of these four different shapes is actually a rotated version of this shape. I want you to tell me which one: the first one, second one, third one or fourth one? Okay, I’ll help you. Fourth one. One more. Get those brains working. Come on. That’s our target shape. Third. Good! This is hard, right? Like, the reason that I asked you to do that is because you really feel your brain cringing, right? It doesn’t really feel like playing mindless action video games. Well, what we do in these training studies is, people come to the lab, they do tasks like this one, we then force them to play 10 hours of action games. They don’t play 10 hours of action games in a row. They do distributed practice, so little shots of 40 minutes several days over a period of two weeks. Then, once they are done with the training, they come back a few days later and they are tested again on a similar type of mental rotation task. So this is work from a colleague in Toronto. What they showed is that, initially, you know, subjects perform where they are expected to perform given their age. After two weeks of training on action video games, they actually perform better, and the improvement is still there five months after having done the training. That’s really, really important. Why? Because I told you we want to use these games for education or for rehabilitation. We need to have effects that are going to be long-lasting. Now, at this point, a number of you are probably wondering well, what are you waiting for, to put on the market a game that would be good for the attention of my grandmother and that she would actually enjoy, or a game that would be great to rehabilitate the vision of my grandson who has amblyopia, for example? Well, we’re working on it, but here is a challenge. There are brain scientists like me that are beginning to understand what are the good ingredients in games to promote positive effects, and that’s what I’m going to call the broccoli side of the equation. There is an entertainment software industry which is extremely deft at coming up with appealing products that you can’t resist. That’s the chocolate side of the equation. The issue is we need to put the two together, and it’s a little bit like with food. Who really wants to eat chocolate-covered broccoli? None of you. (Laughter) And you probably have had that feeling, right, picking up an education game and sort of feeling, hmm, you know, it’s not really fun, it’s not really engaging. So what we need is really a new brand of chocolate, a brand of chocolate that is irresistible, that you really want to play, but that has all the ingredients, the good ingredients that are extracted from the broccoli that you can’t recognize but are still working on your brains. And we’re working on it, but it takes brain scientists to come and to get together, people that work in the entertainment software industry, and publishers, so these are not people that usually meet every day, but it’s actually doable, and we are on the right track. I’d like to leave you with that thought, and thank you for your attention. (Applause) (Applause)

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  1. Wife: "Why are you always playing your stupid video games…blah blah blah…"

    Brain scientist: "Video games r gud."

    Welp, that's all I need boiz.

  2. I stopped after 15 mins…….this woman must be sponsored by the gaming industry…….I'm 56…….I played Jack Attack on a Commordore 64 and a bit of golf on a PC over 40 years ago…….absolute waste of time. Games like 'Call of Duty' are made for one reason alone… desensatise the population (predominantly male) to the illegal and wanton killing of people of other other nations. Another rubbish TED talk.

  3. In the States anyways and quite frankly much of western civilization the day of Working 10-12 hours a day on a farm,having to make your own clothes,soap,butter all that stuff is gone..Much of Manual labor has been sent to 3 world S*%! Holes and now our populace is quite frankly bored and in need of some kind of mental stimuli..I mean i'm not saying the virtual world is the end all be all but it def. beats tens of millions of bored kids having Nothing to do running Amok in our cities getting into petty crimes and outright hooliganism's…So sit Down Grannie and let people do their thing..

  4. 90% of children play video games. I see lots in my country who dont even have cellphones and do not play video games. What's more in the tribes and other children away from cities. Funny thing is that she didn't get that right . Maybe 70% or 60% but not 90% it's too big.

  5. exposure at THE RIGHT AGE she says but doesnt clarify the age… I have held a #1 world ranking in online competitive play and would not recommend any type of screen time for any amount of time for young children.

  6. Daphne: The beneficial side of video games is broccoli, while the irresistible side is chocolate.
    Me: ugh, why can't the irresistible part be something that makes sense, like cheese?
    Daphne: What we need is a new brand of chocolate.

  7. shooting people in the game is far better than shooting real people…. playing video game is very good for people who need to channel their stress, pressure, depression, anger…. after playing video games you will be more calm and relax….

  8. Why can't they be serious? What are those stupid pictures? Looks like she is presenting a high school project.

  9. Sadly I play the sims which isn’t an “action” game so I don’t gain better eye sight and the ability to multitask better etc..

  10. 33 lol
    More like 33rd degree masonry.
    Dirty T drinker on stage.
    Absolute rubbish coming out of this T drinkers mouth, can't even workout what electricity is to turn on the console.

  11. Nobody does 5-10 hrs a week that plays video games – the chemical stimulation from the video games is inherently negative.

  12. 5 to 10 hours a day even had a significant changes than a normal person what about we who games 10 hours a day?🤔

  13. It's funny that people jokingly say that they will show their parents a new video. Yet they also say those hours are rookie hours.

    If those two are the same kind of people the parent will still be against gaming for a lot or hours as she literally stated that too much gaming and binging was bad 😁

  14. my mom says that games are bad cuz my eye sight is bad, even that i didn't play video games when i was diagnosed with this

  15. I will let my kids play videogames i wont be like my parents for sure i will understand them since i am a gamer

  16. Future Man: "Doc, I can't concentrate at work."
    Future Doctor: "Take 12 hours of Fortnite and call me in the morning."

  17. Designing and coding video games is much more fun than just playing them and no more tedious than grinding minotaurs in Norath or spending 40 hours trying to steal the jet out of the military base in GTA5. More lucrative too. Just saying, if you love video games, you might want to study a bit and start making them. Best job in the world.

  18. Playing violent video games leads to passive aggressive behaviour
    Video games boost visual attention but reduce impulse control.

  19. Would love to believe this but I see no mention of double-blind testing, like with themental rotation test. Did she have a control group that had the test before but hadn't gamed in the past week?

  20. 2:21 – Well, considering that I just got out of College and all. If I came home and saw my Daughter playing Sudoku. I'd look at her with pride in my eyes and say "that a Girl!". If I came home and found my Son reading Shakespeare. I'd reprimand him for perpetuating white supremacy and give him a Maya Angelou book instead.

    So, let me just go ahead and give a preemptive -> "It's just a joke people, calm down, I know how you TED folks can be. There's no need to release the dogs or anything, in fact, I'll be leaving now".

  21. She didnt mention a base study result for people who tested without videogames after 2 weeks. Its possible that the reason theres a large gap between the first test and 2 weeks is the mental awareness of what the test will be. It would also account for the seemingly stable growth from 2 weeks to 5 months. You would assume with only 10 hours of gaming under their belt after 2 weeks that once you reach the 5 month mark there would be at minimum the same level of growth as the first 2 weeks but its almost identical and the line barely goes up.

  22. Holy Jesus I am surprised, cheers for realizing the good of a video game, but I do know and have realized the bad in games, I actually quit playing CoD Mobile competitively due to how much it was affecting my mental state, but it wasn't the game's content itself that was making me more pissed off and such like the mainstream media would want you to believe it was due to the fact that people were accessing the game through emulators on PC and are in servers with touchscreen users among various other reasons, until the final third of the game is released (which is PvE only) and/or PC/emulator users are put onto their own servers I will not go near it.

  23. Da unsere Wirtschafts- und Politik-Modelle es nicht zulassen, muss man sich halt in der VR verwirklichen und entwickeln. Ich sage dazu nur : unglaublich viel verschenktes Potential! Man sollte echt mal wegkommen vom Kapitalismus (was nicht rentiert geht unter=kurzsichtige Gewinne) und pubertärem Machtgehabe. Hin zu Effizienz und Lebensqualität für alle.

  24. Yeah I play a lot of games, sometimes I done like 13-14 hours in day(not much only on occasion for level grind😂) and I got great vision, great hearing, great taste. Just all great senses.

  25. Games make us familiar with different GUIs and enhance response time of brain, but as far as the recognition of images based on orientation goes, that one was unrelated. Unless you're playing assassin's creed. 😅

  26. 64 years old, been gaming (on and off) since I was in my mid twenties.
    I take notions and go for a while without gaming, then find something I get into and play it to death.
    Gaming really helped me to exercise my brain after it was damaged following a stroke.
    It also helped me improve the dexterity of my left hand (which had been paralysed at first)
    Recovery has been gradual, but I think is better for me than just passively watching TV.
    For example, I felt rather apprehensive about driving, but flying a hover vessel through the woods in Empyrion actually helped me feel much more relaxed and better co-ordinated driving a real vehicle again. It was a tremendous help to me.
    I once had a great thing called the "Miracle Piano System" which hooked up to the Apple Mac and taught musical keyboard skills through a series of little games – I learned and practiced as addictively as I find gaming, so I thought it was indeed a miraculous way to make learning fun.
    I am a Trainer, so I find it fascinating to look at how we humans learn new things and, if you can make it fun – people take to it much more readily.

    I look at kids playing modern computer games and think "Mehhhh….. amateurs!". (winks)

  27. ur jus tryna sell more games, im not sayin that video games r bad infact i am a gamer. but its obvious ur tryna convince ppl to play more video games even the tests u showed in ur lecture, they dont really "measure" what they supposed to measure, nice sponsored-by-Activision video 🙂

  28. Fucking news media needs to watch this this is all facts and real data and let's be frank their is no concrete data about video games being linked to voilent

  29. What is seen with your eyes, effects your heart… and today we wonder? why we go out and stab and shoot each other today!? Much like what they call music is but the same base note beat over and over … ok I am sorry, I will retract this and be quite

  30. Yeah there’s isn’t 70% of 33 year olds that play games lmao. Clicked right off after seeing that blatantly false bullshit

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