They were taking 3,000 children, they were going to give them all these huge fish oil pills, six of them a day, and then a year later, they were going to measure their school exam performance and compare their school exam performance against what they predicted their exam performance would have been if they hadn't had the pills.
3000人の子どもに対して 全員にこの魚油カプセルを与えます 一日 6 粒ずつ 一年後に学校の試験成績を評価します カプセルを投与しなかった場合に 予想される成績と 比較するというのです