According to Dr . Barbera (2007), a most - to - least prompting hierarchy would occur in the following order:
a) Physical, Gestural, Model, Visual/Textual, Verbal
b) Hand over hand, Gestural, Verbal, Textual, Imitative
c) Modeling, Imitative, Gestural, Verbal, Visual/Textual
d) Verbal, Visual/Textual, Model, Gestural, Physical