Guessing the distribution before I look: Small-ish penalty for below-average intelligence, a flat line through average into slightly above average, then a small-ish penalty for above-average intelligence.
ETA: Oh. No data provided. Pity.
Guessing the distribution before I look: Small-ish penalty for below-average intelligence, a flat line through average into slightly above average, then a small-ish penalty for above-average intelligence.
ETA: Oh. No data provided. Pity.