text: In this task, you have to repeatedly choose between two slot machines labeled O and D.
  You can choose a slot machine by pressing its corresponding key.
  When you select one of the machines, you will win or lose points.
  The machines will not always give you the same points when you select them again, but one slot machine is always better than the other.
  Your goal is to choose the slot machines that will give you the most points.
  You will receive feedback about the outcome after making a choice.
  You will play 20 games in total, each with a different pair of slot machines.
  Each game will consist of 10 trials.
  
  Game 1:
  You press <<D>> and get -4 points.
  You press <<O>> and get -8 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -4 points.
  You press <<O>> and get -8 points.
  You press <<D>> and get -4 points.
  You press <<D>> and get -4 points.
  You press <<O>> and get -7 points.
  You press <<D>> and get -5 points.
  You press <<D>> and get -4 points.
  
  Game 2:
  You press <<D>> and get -13 points.
  You press <<O>> and get 4 points.
  You press <<O>> and get 3 points.
  You press <<O>> and get 3 points.
  You press <<O>> and get 4 points.
  You press <<O>> and get 6 points.
  You press <<O>> and get 4 points.
  You press <<O>> and get 5 points.
  You press <<O>> and get 3 points.
  You press <<O>> and get 5 points.
  
  Game 3:
  You press <<O>> and get -4 points.
  You press <<D>> and get -1 points.
  You press <<D>> and get 0 points.
  You press <<D>> and get -2 points.
  You press <<D>> and get -2 points.
  You press <<O>> and get -2 points.
  You press <<O>> and get -2 points.
  You press <<D>> and get -1 points.
  You press <<D>> and get -1 points.
  You press <<D>> and get -2 points.
  
  Game 4:
  You press <<O>> and get -8 points.
  You press <<D>> and get -6 points.
  You press <<D>> and get -7 points.
  You press <<O>> and get -8 points.
  You press <<O>> and get -9 points.
  You press <<D>> and get -8 points.
  You press <<D>> and get -7 points.
  You press <<D>> and get -6 points.
  You press <<D>> and get -6 points.
  You press <<O>> and get -9 points.
  
  Game 5:
  You press <<D>> and get 11 points.
  You press <<D>> and get 11 points.
  You press <<D>> and get 11 points.
  You press <<O>> and get -16 points.
  You press <<D>> and get 12 points.
  You press <<D>> and get 11 points.
  You press <<D>> and get 11 points.
  You press <<D>> and get 12 points.
  You press <<D>> and get 11 points.
  You press <<D>> and get 10 points.
  
  Game 6:
  You press <<D>> and get 14 points.
  You press <<O>> and get 0 points.
  You press <<D>> and get 16 points.
  You press <<D>> and get 13 points.
  You press <<D>> and get 14 points.
  You press <<D>> and get 13 points.
  You press <<D>> and get 13 points.
  You press <<D>> and get 15 points.
  You press <<D>> and get 12 points.
  You press <<D>> and get 15 points.
  
  Game 7:
  You press <<O>> and get -3 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -5 points.
  You press <<D>> and get -5 points.
  You press <<O>> and get -1 points.
  You press <<O>> and get -2 points.
  You press <<O>> and get -2 points.
  You press <<O>> and get -3 points.
  You press <<D>> and get -5 points.
  You press <<O>> and get -2 points.
  
  Game 8:
  You press <<D>> and get -3 points.
  You press <<O>> and get -9 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -3 points.
  You press <<O>> and get -9 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -4 points.
  You press <<D>> and get -2 points.
  You press <<D>> and get -2 points.
  
  Game 9:
  You press <<D>> and get -2 points.
  You press <<O>> and get 1 points.
  You press <<O>> and get 2 points.
  You press <<O>> and get 1 points.
  You press <<D>> and get -3 points.
  You press <<O>> and get 1 points.
  You press <<O>> and get 0 points.
  You press <<O>> and get 1 points.
  You press <<O>> and get 4 points.
  You press <<O>> and get 1 points.
  
  Game 10:
  You press <<O>> and get -5 points.
  You press <<D>> and get -4 points.
  You press <<D>> and get -4 points.
  You press <<O>> and get -6 points.
  You press <<D>> and get -6 points.
  You press <<O>> and get -6 points.
  You press <<D>> and get -5 points.
  You press <<D>> and get -4 points.
  You press <<D>> and get -4 points.
  You press <<O>> and get -7 points.
  
  Game 11:
  You press <<D>> and get 9 points.
  You press <<O>> and get 4 points.
  You press <<D>> and get 10 points.
  You press <<O>> and get 2 points.
  You press <<D>> and get 8 points.
  You press <<D>> and get 7 points.
  You press <<D>> and get 7 points.
  You press <<D>> and get 8 points.
  You press <<D>> and get 7 points.
  You press <<D>> and get 7 points.
  
  Game 12:
  You press <<D>> and get -1 points.
  You press <<O>> and get -2 points.
  You press <<D>> and get -4 points.
  You press <<O>> and get -4 points.
  You press <<D>> and get -1 points.
  You press <<D>> and get -1 points.
  You press <<O>> and get -5 points.
  You press <<D>> and get -2 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -3 points.
  
  Game 13:
  You press <<D>> and get -4 points.
  You press <<O>> and get -8 points.
  You press <<D>> and get -3 points.
  You press <<O>> and get -8 points.
  You press <<D>> and get -5 points.
  You press <<D>> and get -5 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -4 points.
  You press <<D>> and get -4 points.
  You press <<D>> and get -6 points.
  
  Game 14:
  You press <<D>> and get 0 points.
  You press <<O>> and get -13 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -1 points.
  You press <<O>> and get -15 points.
  You press <<D>> and get -2 points.
  You press <<D>> and get -2 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -1 points.
  
  Game 15:
  You press <<D>> and get -1 points.
  You press <<O>> and get -2 points.
  You press <<D>> and get 0 points.
  You press <<D>> and get 2 points.
  You press <<D>> and get 2 points.
  You press <<D>> and get 2 points.
  You press <<D>> and get 1 points.
  You press <<D>> and get 0 points.
  You press <<D>> and get 0 points.
  You press <<D>> and get 0 points.
  
  Game 16:
  You press <<D>> and get 4 points.
  You press <<D>> and get 4 points.
  You press <<O>> and get -7 points.
  You press <<D>> and get 6 points.
  You press <<D>> and get 4 points.
  You press <<D>> and get 5 points.
  You press <<D>> and get 6 points.
  You press <<D>> and get 6 points.
  You press <<D>> and get 5 points.
  You press <<D>> and get 5 points.
  
  Game 17:
  You press <<D>> and get 13 points.
  You press <<O>> and get 2 points.
  You press <<D>> and get 12 points.
  You press <<D>> and get 10 points.
  You press <<D>> and get 11 points.
  You press <<D>> and get 11 points.
  You press <<D>> and get 10 points.
  You press <<D>> and get 11 points.
  You press <<D>> and get 12 points.
  You press <<D>> and get 11 points.
  
  Game 18:
  You press <<O>> and get -6 points.
  You press <<D>> and get 6 points.
  You press <<D>> and get 7 points.
  You press <<D>> and get 7 points.
  You press <<D>> and get 8 points.
  You press <<D>> and get 8 points.
  You press <<D>> and get 6 points.
  You press <<D>> and get 8 points.
  You press <<D>> and get 9 points.
  You press <<D>> and get 6 points.
  
  Game 19:
  You press <<D>> and get -2 points.
  You press <<O>> and get 3 points.
  You press <<O>> and get -2 points.
  You press <<O>> and get 0 points.
  You press <<O>> and get -2 points.
  You press <<O>> and get -2 points.
  You press <<D>> and get -1 points.
  You press <<D>> and get 1 points.
  You press <<D>> and get -3 points.
  You press <<D>> and get -2 points.
  
  Game 20:
  You press <<D>> and get 1 points.
  You press <<D>> and get 0 points.
  You press <<O>> and get -5 points.
  You press <<O>> and get -5 points.
  You press <<D>> and get -1 points.
  You press <<D>> and get 0 points.
  You press <<D>> and get -1 points.
  You press <<D>> and get 1 points.
  You press <<D>> and get 0 points.
  You press <<D>> and get 0 points.