Furthermore, this hypothesis could be extended to other actions such as pointing movements.
Working with the Müller–Lyer illusion, Gentilucci and colleagues (2001) investigated whether adults
and 7- and 8-year-olds processed the length of a target line with regard to the configuration of context
lines. In their study, participants either drew the length of the target line (perception task) or pointed
as quickly as possible to one endpoint of the target line (action task). Adults processed the length of
the target line in interaction with the configuration of the context lines in the perception task but did
so independently in the action task. Children, on the contrary, processed the length of the target line
interactively in both the perception and action tasks