Sorry, but children do not see the world in black and white, not literally nor in terms of good/bad. Some people seems to divide the world around them like that, but it has nothing to do with age.

If you want to get pedantic I'll revise that too young children typically have a simplistic world view where things are either good or bad. I'm all too aware that many adults are like that as well, but it's a childish attitude that speaks very poorly of them. I also expect that kind of attitude is negatively correlated with IQ, but have no evidence to back that up.