treatment "common-value-auction.ztt"{
	background{
		table globals{
		}
		table subjects{
		}
		table summary{
		}
		table contracts{
		}
		table clients{
		}
		table treatments{
		}
		table sessionglobals{
		}
		table participations{
		}
		numsubjects = 3;
		numgroups = 1;
		numpracticeperiods = 0;
		numactualperiods = 1;
		exchangerate = 1;
		startendowment = 0;
		showupfee = 0;
		noAutoscope = FALSE;
		firstBoxesOnTop = FALSE;
		showupfeeawaytext = "You are making losses. Do you want to invest the showupfee in order to continue?";
		showupfeeawayyestext = "Yes";
		showupfeeawaynotext = "No";
		moneyawaytext = "You are  making losses. Do you want to continue?";
		moneyawayyestext = "Yes";
		moneyawaynotext = "No";
		bancruptwaittext = "Please wait until the experimenter unlocks your PC.";
		program{
			table = subjects;
			do{
				MaxValue = 100;
				Noise = 10;
			}
		}
		screen action{
			usesbg = TRUE;
			withalertscreen = FALSE;
			noalertscreen = FALSE;
			headerbox "Header"{
				hasframe = TRUE;
				height = 10%;
				top = 0p;
				cuttop = TRUE;
				showPeriods = TRUE;
				showNumPeriods = TRUE;
				periodtext = "Period";
				periodoftext = "of";
				practiceperiodprefix = "Trial ";
				showtime = TRUE;
				timestr = "Remaining time [sec]:";
				pleasedecidetext = "Please reach a decision.";
			}
		}
		screen wait{
			usesbg = TRUE;
			withalertscreen = FALSE;
			noalertscreen = FALSE;
			standardbox "Text"{
				hasframe = TRUE;
				buttonposition = BOTTOMRIGHT;
				buttonsequence = HORIZONTAL;
				item{
					label = "Please wait until the experiment continues.";
				}
			}
		}
	}
	stage "Bid"{
		startwaitforall = TRUE;
		startConditionStr = "";
		singleentry = FALSE;
		singleentrycontinuation = FALSE;
		timeouttype = ifnoinput;
		timeout = 60;
		program{
			table = subjects;
			do{
				Draw = rounddown(random() * (MaxValue + 1), 1);
			}
		}
		program{
			table = subjects;
			do{
				// The value is player 1's draw, the same for the group.
							Value = find(same(Group) & Player == 1, Draw);
							Estimate = min(MaxValue, max(0, Value + rounddown(random() * (2 * Noise + 1), 1) - Noise));
			}
		}
		screen action{
			usesbg = TRUE;
			withalertscreen = FALSE;
			noalertscreen = FALSE;
			standardbox "Bid"{
				hasframe = TRUE;
				buttonposition = BOTTOMRIGHT;
				buttonsequence = HORIZONTAL;
				item{
					label = "The item is worth the same to every bidder in your group: a number from 0 to 100.";
				}
				item{
					label = "Your estimate of it (the true value is at most 10 away)";
					variable = Estimate;
					format = "1";
					input = FALSE;
				}
				item{
					label = "The highest bid wins the item, and pays the bid. The winner earns the item's value minus";
				}
				item{
					label = "their bid, which can be negative.";
				}
				item{
				}
				item{
					label = "Your bid";
					variable = Bid;
					format = "1";
					input = TRUE;
					showdefault = FALSE;
					emptyallowed = FALSE;
					min = 0;
					max = MaxValue;
				}
				button "OK"{
					clearinputafterok = FALSE;
					norecordmadeorselected = FALSE;
					terminatestage = FALSE;
					donotterminatestage = FALSE;
					specialbuttoncolor = FALSE;
					buttoncolor = 0;
				}
			}
		}
		screen wait{
			usesbg = TRUE;
			withalertscreen = FALSE;
			noalertscreen = FALSE;
		}
	}
	stage "Results"{
		startwaitforall = TRUE;
		startConditionStr = "";
		singleentry = FALSE;
		singleentrycontinuation = FALSE;
		timeouttype = ifnoinput;
		timeout = 30;
		program{
			table = subjects;
			do{
				HighestBid = maximum(same(Group), Bid);
							Tie = random();
			}
		}
		program{
			table = subjects;
			do{
				Won = if(Bid == HighestBid & Tie == minimum(same(Group) & Bid == :HighestBid, Tie), 1, 0);
							Profit = if(Won == 1, Value - Bid, 0);
			}
		}
		screen action{
			usesbg = TRUE;
			withalertscreen = FALSE;
			noalertscreen = FALSE;
			standardbox "Results"{
				hasframe = TRUE;
				buttonposition = BOTTOMRIGHT;
				buttonsequence = HORIZONTAL;
				item{
					label = "The item was worth";
					variable = Value;
					format = "1";
					input = FALSE;
				}
				item{
					label = "Your estimate";
					variable = Estimate;
					format = "1";
					input = FALSE;
				}
				item{
					label = "Your bid";
					variable = Bid;
					format = "1";
					input = FALSE;
				}
				item{
					label = "The highest bid";
					variable = HighestBid;
					format = "1";
					input = FALSE;
				}
				item{
					label = "You";
					variable = Won;
					format = "!text: 1=\"won the item\"; 0=\"did not win the item\";";
					input = FALSE;
				}
				item{
					label = "Your payoff";
					variable = Profit;
					format = "1";
					input = FALSE;
				}
				button "Continue"{
					clearinputafterok = FALSE;
					norecordmadeorselected = FALSE;
					terminatestage = FALSE;
					donotterminatestage = FALSE;
					specialbuttoncolor = FALSE;
					buttoncolor = 0;
				}
			}
		}
		screen wait{
			usesbg = TRUE;
			withalertscreen = FALSE;
			noalertscreen = FALSE;
		}
	}
	roles{
		role "S 1"{
		}
		role "S 2"{
		}
		role "S 3"{
		}
	}
	period "1"{
		prompt = "";
		subject 1{
			name = "";
			group = 1;
			do{
				Player = 1;
			}
		}
		subject 2{
			name = "";
			group = 1;
			do{
				Player = 2;
			}
		}
		subject 3{
			name = "";
			group = 1;
			do{
				Player = 3;
			}
		}
	}
}