Maybe it was less sinister and just that there was not enough interesting data?
Mini rant: No idea your nationality - most of the Indians I've met are some of the most egotistical people in the world, and constantly feel the need to interject themselves into everything. Maybe people from India just don't draw statistically interesting circles.
Now that's an insult I'm going to have to pocket for the Culture Wars: "$YOU_PEOPLE draw statistically uninteresting circles!"
Truly this is the argument that shall be the first ever to result in the win-by-acclamation that so many have fantasized about online, yet never experienced.
Extended rant: Because skipping 1/6th of the World population, with the most amount of diverse cultures, makes a very effective study doesn't it? :) Suggest changing the name of the article from "cultures around the world" if it's going to skip 1/6th of the World anyways.
