Regardless of the basic conceptual point being made (merits of tiger parenting vs. holistic "participation trophy" style parenting), this research doesn't look that convincing.

There's the graphic: "Top 1% cognition aged 12 and top 5% salary mid-30s" which is supposed to be the most dramatic one. So apparently we suddenly just take at face value the criticism "if you're so smart, why aren't you rich"?