Table 3.

Criterial test individual problem results.

Stage	Prob. no.	Topics	Rubric items	Blocked mean (95% CI)	Interleaved mean (95% CI)	Effect size, p value
1
	1	I, G	All	0.44 (0.39, 0.50)	0.51 (0.46, 0.56)	d = 0.20, p = 0.0974
			Memory only	00.52 (0.47 0.58)	0.59 (0.54, 0.64)	d = 0.21, p = 0.0755
			Correctness only	0.22 (0.15, 0.29)	0.26 (0.20, 0.34)	d = 0.11, p = 0.3296
	2	B, F	All	0.45 (0.40, 0.50)	0.51 (0.46, 0.55)	d = 0.19, p = 0.1104
			Memory only	0.53 (0.47, 0.58)	0.59 (0.54, 0.64)	d = 0.19, p = 0.1163
			Correctness only	0.07 (0.04, 0.12)	0.10 (0.05, 0.15)	d = 0.10, p = 0.4053
	3	P	All	0.40 (0.34, 0.47)	0.58 (0.52, 0.64)	d = 0.48, p < 0.0001
			Memory only	0.45 (0.39, 0.52)	0.64 (0.58, 0.70)	d = 0.48, p < 0.0001
			Correctness only	0.16 (0.10, 0.22)	0.28 (0.22, 0.36)	d = 0.31, p = 0.0092
2
	1	L, Q	All	0.35 (0.31, 0.39)	0.49 (0.45, 0.54)	d = 0.60, p < 0.0001
			Memory only	0.40 (0.35, 0.44)	0.56 (0.51, 0.60)	d = 0.61, p < 0.0001
			Correctness only	0.03 (0.01, 0.07)	0.07 (0.03, 0.11)	d = 0.15, p = 0.2157
	2	S, X	All	0.26 (0.21, 0.30)	0.60 (0.56, 0.65)	d = 10.23, p < 0.0001
			Memory only	0.30 (0.25, 0.35)	0.70 (0.65, 0.75)	d = 10.28, p < 0.0001
			Correctness only	0.05 (0.02, 0.09)	0.13 (0.08, 0.19)	d = 0.27, p = 0.0248
	3	H	All	0.17 (0.12, 0.22)	0.30 (0.24, 0.36)	d = 0.40, p = 0.0009
			Memory only	0.17 (0.12, 0.21)	0.29 (0.23, 0.34)	d = 0.38, p = 0.0016
			Correctness only	0.18 (0.12, 0.25)	0.34 (0.26, 0.42)	d = 00.38, p = 0.0019

Topic labels correspond to Table 1.