They used to lock people up for insanity.

[wifehunter]

How would they determine the level of insanity...basic math problems tests?

 

[wifehunter]

Thanks for the warning!

 

[Spaz]

They'd check chemical imbalances in ur brain.

 

[Serenity]

Don't know how it is in the US, but in Norway they evaluate whether or not the person is a direct danger for themselves and others. Meaning you can be pretty insane and be free as long as you don't physically harm anyone.

 

[MoreThanSmooth]

There are a whole load of symptoms of disjointed thought that any trained psychiatrist can usually pick up. Nothing like a mathematics test.

Usually I don't think it's particularly hard to know when someone is outright insane. They tend to develop delusions, irrational paranoia. Word salad is a particularly disturbing example of insanity.