- 150 trials (120 normal, 30 probe)
- 6 different probe types:
	- 1 v 2
	- 1 v 3
	- 2 v 3
	- 2 v 4
	- 3 v 4
	- high v low
- colors: IndianRed, RoyalBlue, SeaGreen, Gold, Lavender, Indigo