Table 1.

Description of Participants in Experiment 1.

Participants	Repertoires taught prior to the experiment	Chronological age, diagnoses and relevant missing repertoires
Student A	Write dictated letters A-Z, and textually respond, vocally spell 4 words, textually respond to 15 words, and words he was to spell	Five-year-old male, Stanford Binet verbal IQ 59, speech impairment and language delays, transformation of stimulus function across speaking and writing missing
Student B	Write dictated letters A-Z and textually respond, vocally spell 5 words, textually respond to 150 words, and words he was to spell	Five-year-old male, Stanford Binet verbal IQ 71, speech impairment and language delays, transformation of stimulus function across speaking and writing missing
Student T	Vocal mand and tact with related autoclitics, write dictated letters A-Z and textually respond to 200 words, and words she was to spell	Five-year-old female, Stanford Binet composite score of 60, autism and mental retardation, no spelling instruction, transformation of stimulus function across speaking and writing missing
Student J	Write dictated letters A-Z and textually respond, textually to respond to 75 words, and words he was to spell	Six-year-old male, Stanford Binet verbal IQ 76, autism and speech impairment, no spelling instruction, transformation of stimulus function across speaking and writing missing