treatment "matching-pennies.ztt"{
	background{
		table globals{
		}
		table subjects{
		}
		table summary{
		}
		table contracts{
		}
		table clients{
		}
		table treatments{
		}
		table sessionglobals{
		}
		table participations{
		}
		numsubjects = 2;
		numgroups = 1;
		numpracticeperiods = 0;
		numactualperiods = 4;
		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{
				Stakes = 100;
			}
		}
		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 "Decision"{
		startwaitforall = TRUE;
		startConditionStr = "";
		singleentry = FALSE;
		singleentrycontinuation = FALSE;
		timeouttype = ifnoinput;
		timeout = 60;
		program{
			table = subjects;
			do{
				// Player 1 is the matcher in periods 1 and 2, player 2 in periods 3 and 4.
						Matcher = if((Player == 1) == (Period <= 2), 1, 0);
			}
		}
		screen action{
			usesbg = TRUE;
			withalertscreen = FALSE;
			noalertscreen = FALSE;
			standardbox "Decision"{
				hasframe = TRUE;
				buttonposition = BOTTOMRIGHT;
				buttonsequence = HORIZONTAL;
				item{
					label = "You are the";
					variable = Matcher;
					format = "!text: 1=\"matcher: you win 100 if your choices match\"; 0=\"mismatcher: you win 100 if your choices differ\";";
					input = FALSE;
				}
				item{
				}
				item{
					label = "I choose";
					variable = Side;
					format = "!radio: 1=\"Heads\"; 2=\"Tails\";";
					input = TRUE;
					showdefault = FALSE;
					emptyallowed = FALSE;
					min = 1;
					max = 2;
				}
				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{
				OtherSide = find(same(Group) & not(same(Subject)), Side);
						Won = if((Side == OtherSide) == Matcher, 1, 0);
						Profit = Won * Stakes;
			}
		}
		screen action{
			usesbg = TRUE;
			withalertscreen = FALSE;
			noalertscreen = FALSE;
			standardbox "Results"{
				hasframe = TRUE;
				buttonposition = BOTTOMRIGHT;
				buttonsequence = HORIZONTAL;
				item{
					label = "You chose";
					variable = Side;
					format = "!text: 1=\"Heads\"; 2=\"Tails\";";
					input = FALSE;
				}
				item{
					label = "The other player chose";
					variable = OtherSide;
					format = "!text: 1=\"Heads\"; 2=\"Tails\";";
					input = FALSE;
				}
				item{
					label = "You";
					variable = Won;
					format = "!text: 1=\"won\"; 0=\"lost\";";
					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"{
		}
	}
	period "1"{
		prompt = "";
		subject 1{
			name = "";
			group = 1;
			do{
				Player = 1;
			}
		}
		subject 2{
			name = "";
			group = 1;
			do{
				Player = 2;
			}
		}
	}
	period "2"{
		prompt = "";
		subject 1{
			name = "";
			group = 1;
			do{
				Player = 1;
			}
		}
		subject 2{
			name = "";
			group = 1;
			do{
				Player = 2;
			}
		}
	}
	period "3"{
		prompt = "";
		subject 1{
			name = "";
			group = 1;
			do{
				Player = 1;
			}
		}
		subject 2{
			name = "";
			group = 1;
			do{
				Player = 2;
			}
		}
	}
	period "4"{
		prompt = "";
		subject 1{
			name = "";
			group = 1;
			do{
				Player = 1;
			}
		}
		subject 2{
			name = "";
			group = 1;
			do{
				Player = 2;
			}
		}
	}
}