Table 3.

Component Operational Definitions

Component	Operational Definition	N/A	N/V
A. Present materials as written	Presents the trial slide in the slideshow; includes presenting the iPad and placing it in front of the child.	0	6
B. Require attending	Waits 5 s for the child to look at the slide (± 1 s). If the child does not look at the slide after 5 s, says, “Look” while pointing to the slide. Re-presents the look prompt every 5 s (±1 s) until the child looks.	0	0
C. Present SD as written	Presents the SD “What is it doing?” (verb stimuli) or “What animal?” (noun stimuli). The SD can be immediately preceded by the child’s name.	0	0
D. Provide praise contingent on correct response	Provides general praise (e.g., Nice job!) immediately following a correct independent or correct prompted response.	0	0
E. Provide tangible contingent on correct response	Provides a preferred tangible for 30 s (± 3 s) following correct independent or correct prompted responses (during nondifferential reinforcement phase) or correct independent responses (during differential reinforcement phase).	11	3
F. Presents controlling prompt as written	Re-presents the SD with an immediate echoic prompt (e.g., “What is it doing? Jumping.” or “What animal? Goat”) after incorrect responses or 5 s without a response. Continues to re-present the SD and echoic prompt every 5 s (± 1 s) until the child emits a correct prompted response.	103	0
G. Remove teaching materials as written	Swipes to the blank inter-trial-interval (ITI) slide or turns iPad screen away from child.	0	0
H. Record data	Records data on data sheet before presenting the next trial.	0	40
I. End trial as written	Gives the child an opportunity to hand over items using a prompt every 5 s (± 1 s) as specified by the “My Turn Protocol” to remove preferred items at the end of the reinforcement interval or moves to ITI without access to preferred items (differential reinforcement phase).	0	3
J. Respond to challenging behavior	Continues with current demand or presents new demand as scheduled when challenging behavior occurs, ignores unintelligible screaming, and prompts calm mands.	123	0

A copy of the My Turn Protocol is available in Supplementary Information (Fig. S3). The N/A (not applicable) and N/V (not visible) columns include the number of times each component was coded as N/A or N/V across the 10 observations, which included a total of 130 trials. As can be observed from the totals, many of the responses provided by the child were correct and did not require a prompt, and there were few instances of challenging behavior