The g factor is actually a psychometric construct to an extent, and its distribution isn't known but it's generally thought that it's probably normally distributed. Basically the g factor just summarizes how results on a bunch of different cognitive tasks tend to correlate.
I read something about this two days ago, it's called "g factor" or something. And yes, it follows a normal distribution.
Apparently, it's very similar in animals than it is in humans.
The g factor is actually a psychometric construct to an extent, and its distribution isn't known but it's generally thought that it's probably normally distributed. Basically the g factor just summarizes how results on a bunch of different cognitive tasks tend to correlate.