rock-paper-scissors

じゃんけんの勝率を上げる方法はあるのでしょうか。運によって勝敗が決まると思われているじゃんけんですが，この記事では運以外の要素を解明した研究を取り上げています。研究方法は360名の学生を雇い，各人に300回のじゃんけんをしてもらい，勝てば報酬をもらえるというものです。実験の結果，勝った人は勝った手（グーで勝てば次もグーを出す）を出し続ける傾向があり，負けた人は違う手（グーで負けたら次はパーを出す）を出すという傾向が見つかったそうです。この結果はゲーム理論の"win-stay lose-shift"という考えとも合致しているそうです。
　相手の出す手や勝敗を注意深く観察していれば，じゃんけんの勝率を高くできるかもしれません。（Ume）

How to win at rock-paper-scissors

What are your odds of winning rock-paper-scissors? Simple - one in three. At least, that's what chance predicts.

But people do not play randomly - they follow hidden patterns that you can predict to win more games than you should, a study has revealed.

Winners tend to stick with their winning action, while losers tend to switch to the next action in the sequence "rock-paper-scissors".

Anticipating these moves could give you a winning edge, say scientists.

Their strategy was revealed in a massive rock-paper-scissors tournament at Zhejiang University in China, documented on the Arxiv server.

Scientists recruited 360 students and divided them into groups of six. Each competitor played 300 rounds of rock-paper-scissors against other members of their group.

As an incentive, the winners were paid - in proportion to their number of victories.

Their strategy was revealed in a massive rock-paper-scissors tournament at Zhejiang University in China, documented on the Arxiv server.

Scientists recruited 360 students and divided them into groups of six. Each competitor played 300 rounds of rock-paper-scissors against other members of their group.

As an incentive, the winners were paid - in proportion to their number of victories.