Meryl Horn

And first, you had to put in your goals for how long you want to spend on your phone.

So, like, maybe you're using it for five hours a day and you want to get down to four hours a day.

Then you got this special app.

It's called Goalkeeper.

And it had three different levels.

So...

Sometimes people would just get the easy levels, basically a control where you just get a warning message when you go past your time limit.

And another one, you just get kicked off your phone for a little bit of time.

But then the third level is the intense one.

So Jaejung called this condition strong lockout.

Just because you want to make people suffer?

That's true, but then people will be eating up their time for the next day.

So yeah, people were very aware of like how much time they had left on their phone.

And so everyone tried out these like kind of different levels of the app for one week.

And I first wanted to know, yeah, what happened when people were in this, the week when they had the really hardcore approach, the strong lockout.

First, let's just look at, did it work to get people to use their phones less?

So yeah, people did use their phones for roughly 75 minutes less every day.

So in that sense, it worked.

Yeah.

But then the caveat was that people really didn't like it.