This study aimed to test the internal modelling deficit (IMD) hypothesis using the mental
rotation paradigm. According to the IMD hypothesis, children with Developmental Coordination Disorder
(DCD) have an impaired ability to internally represent action. Thirty-six children (18 DCD) completed
four tasks: two versions of a single-hand rotation task (with and without explicit imagery instructions),
a whole-body imagery task and an alphanumeric rotation task.