Table 5.

Estimates of effects of item type (P- versus S-item), pre-/post-administration and sample on quiz accuracy.

source	estimate	s.e.	t-value
(intercept)	0.575	0.028	20.357
item type (P/S)	−0.276	0.019	−14.208
pre/post	0.015	0.019	0.789
sample (1/2)	−0.037	0.035	−1.049