'Anderson and co have found evidence of an entirely counterintuitive phenomenon in which skill levels play the opposite role, so that skillful players are more likely to make an error than their lower-ranked counterparts.'

I would to see more how the study was done because i highly doubt this could be possible. It can be the case that in high ranked games the oponent will put you in harder spots, and errors will comes. But by definition, better players take better decisions Ev average.

An interesting study will be a list of leaks the population usually have.

For exemple in pkker before solvers, people with a very strong hand on flop, lets say straight draw+ flush draw, when the board turn bad for them, they are way more likely to call a bet on river, because they hand was so strong on flop. Solver will show is a bad call because you block possible bluffs opponent could have (flush and straight draws) so his value range is bigger.