Baseline and probe sessions. During baseline sessions, a play set was placed on the table or floor in front of the child. After the instruction,“it’s time to play” (or a similar statement), the participant was given 4 min to play with the toys (MacDonald et al., 2005). The experimenter did not deliver any additional instructions, prompts, or rewards. Throughout the remaining phases, probe sessions were conducted in the same manner immediately after the video modeling session.