text: In the following you will be presented with multiple choices between two options X and F.
  Please name which option you would prefer by pressing the corresponding key.
  
  You have the choice between receiving 500$ immediately (press X) or receiving 550$ in one year (press F). You press <<X>>.
  You have the choice between receiving 500$ immediately (press X) or receiving 600$ in one year (press F). You press <<F>>.
  You have the choice between paying 500$ immediately (press X) or paying 550$ in one year (press F). You press <<X>>.
  You have the choice between paying 500$ immediately (press X) or paying 510$ in one year (press F). You press <<F>>.
  You have the choice between receiving 5000$ immediately (press X) or receiving 5500$ in one year (press F). You press <<X>>.
  You have the choice between receiving 5000$ immediately (press X) or receiving 6000$ in one year (press F). You press <<F>>.
  You have the choice between receiving 500$ in one year (press X) or receiving 600$ in two years (press F). You press <<X>>.
  You have the choice between receiving 500$ immediately (press X) or receiving 700$ in two years (press F). You press <<F>>.
  You have the choice between wait 500$ immediately (press X) or wait 600$ in one year (press F). You press <<F>>.
  You have the choice between receive 500$ immediately (press X) or receive 600$ in one year (press F). You press <<F>>.