Table 2.

Sequence of experimental phases, including prestests and pretraining.

Phases	Tasks
Pretest	Test oral naming, Sets C, C‘, and C“; Teach oral naming, Sets B, B‘, and B“
Pretraining A	Teach identity matching-to-sample with Set Colors-PA
Pretraining B	Teach arbitrary matching-to-sample, Set Colors-PA and Set Colors-PB
Pretraining C	Teach correct use of “begin” and “end” with Set Pictures-PC
I	Teach feature matching — printed words to Set S1 (initial position)
II	Teach feature matching — printed words to Set S1 (final position)
III	Teach arbitrary matching — Set B to Set A
IV	Test/teach constructed response identity matching — Set S3 to Set AN C
V	Test/teach constructed response arbitrary matching — Set S3 to Set A
VI	Test arbitrary matching –– Set B to Set C and Set C to Set B
VII	Teach arbitrary matching — Set B‘ to Set A‘
VIII	Test arbitrary matching –– Set B‘ to Set C‘ and Set C‘ to Set B‘
IX	Test/teach constructed response identity matching — Set S3 to Set AN C‘
X	Test/teach constructed response arbitrary matching — Set S3 to Set A‘
XI	Teach feature matching — printed words to Set S2 (initial position)
XII	Teach feature matching — printed words to Set S2 (final position)
XIII	Teach arbitrary matching — Set B“ to Set A“
XIV	Test arbitrary matching –– Set B“ to Set C“ and Set C“ to Set B“
XV	Test/teach constructed response identity matching — Set S4 to Set AN C“
XVI	Test/teach constructed response arbitrary matching — Set S4 to Set A“
XVII	Test oral naming — Sets C, C‘, C“, and C“‘