To demonstrate a functional relation between implementation of video
prompting and increases in the percentage of steps completed correctly, the initial
baseline and video prompting phases were arranged according to a multiplebaseline
across subjects design (Kennedy, 2005). Following the initial phase of
video prompting, we reintroduced baseline conditions (i.e., no video prompting)
to assess whether or not video prompting could be abruptly withdrawn following
acquisition of the skill. However, because performance deteriorated with this manipulation,
we then implemented the video fading procedure. Follow-up sessions
were conducted at 1, 2, and 3 months without using any video prompting. However,
because performance had deteriorated at these follow-up sessions, three final
follow-up sessions were conducted at 3 months with the 1-chunk video prompting
procedure in place.