Table 1.

The number of retrieval practice attempts as a function of retrieval practice guidance and task difficulty.

	Task difficulty
	Easy	Medium	Difficult
Guidance	2.20 (0.92)	2.39 (0.89)	2.41 (0.81)
No guidance	1.06 (0.66)	1.28 (0.64)	1.25 (0.69)

The standard error of the mean is in parentheses.