@j @icedquinn
Uh huh... Sure. Let me ask you something. How many mirrors do you think a Kenyan household has on average?
I'm sure the study is accurate, because it does make sense when you realize children from US or Canada are gonna come across far more mirrors and shiny surfaces on a daily basis, and get a chance to "exercise" their ability to recognize what is going on in those reflections.
Maybe you think this proves something about the inherent genetic potential for intelligence in people from Kenya, or Peru, or whatever. But I think the title referencing culture is more accurate. When you live in poverty, in dirt houses, you're not gonna have the privilege to play with shiny mirrors. So a cultural effect.