I stumbled upon this story Friday. When comparing my career choices against my brother’s, I’d say this theoretical IQ advantage means bupkes. Same for my wife, who is also the oldest. It’s going to be a tough sell to my three nephews Nick, Landon and Hunter, the oldest in each set, to do well in Math or other hard courses, all because their IQs might be 2.3 points higher?
The study is based upon Norwegian army conscripts so no one in North Dakota will give it any credit due to all the Norwegian jokes.