Table 1.

Game-play progression algorithms used in Experiment 2.

Algorithm	Level up	Level down	Structure
Staircase classic	3 hits	2 errors	Within blocks
Staircase moderate	3 hits	3 errors	Within blocks
Staircase difficult	6 hits	2 errors	Within blocks
Mini-block moderate	<6 errors in 40-trial block	>8 errors in 40-trial block	Between blocks
Mini-block difficult	<3 errors in 40-trial block	>6 errors 40-trial block	Between blocks
Mini-block reset	<3 errors in 40-trial block	>6 errors 40-trial block	Starts session at 2-back