Table 1.

Number of correct responses required (middle column) at each training trial (right column) to reach the 67 and 84% learning criterion.

Criterion	Number of correct responses	Trial number
67%	7 or 8	11
	9	14
	10	16
	12	19
	14 in the last 21 trials	22–60
84%	9	11
	14	17
	17 or 18	21
	17 or 18 in the last 21	22–60