Table 2.

Treatment parameters for children in blocked (B1–4) and spaced (S1–3) conditions.

Participant	Target form	Control form	Treatment days	Unique nouns or verbs recast a	Unique nouns or verbs bombarded b
B1	Past tense -ed	She	26	297	92
B2	He	Auxiliary “is”	26	304	106
B3	Auxiliary “is”	She	26	285	102
B4	He	Auxiliary “is”	26	295	105
S1	She	“What” questions	17	202	73
	Negative “doesn't”	“What” questions	9	130	56
S2	Past tense -ed	Auxiliary “is”	24	242	68
S3	3rd person -s	Past tense -ed	24	258	92
		M	22.3	251.6	86.8
		SD	6.2	60.00	18.8

^a Unique nouns or verbs recast refer to the noun or verb used by the child that was recast by the clinician with the target form.

^b Unique nouns or verbs bombarded refers to the noun or verb the clinician used with the target form during the bombardment phase of treatment.