We need to go beyond saying, 'I know what these games do because I see my son playing them,' and try to understand the complexities - that different video games have different effects.

We know there are good sugars and bad sugars, and we don't discuss whether food in general is good or bad for us. We need to be far more nuanced when we talk about the effects of video games.

People who played action video games have better vision in the sort of conditions where there is not much contrast. It can make all the difference when driving at dusk, or in fog, in being able, for instance, to see a dog crossing the road in twilight.

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.

In order to sharpen its prediction skills, our brains constantly build models, or 'templates,' of the world. The better the template, the better the performance. And now we know playing action video game actually fosters better templates.

I love video games.