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Are objects that are more difficult to physically manipulate also more difficult to mentally manipulate? In our study, participants interacted with wooden objects modeled after the figures from Shepard and Metzler's (1971) classic mental rotation experiment. One pair of objects was easy to physically rotate while another pair was difficult. They then completed a standard mental rotation task on images of these objects. Participants were slower to mentally rotate objects that were harder to physically rotate when they engaged in motor imagery. Further, this cost accrued with increasing angles of rotation. We verified this was the result of motor imagery by showing that the costs can be eliminated by using a strictly visual imagery strategy (imagining the objects moving on their own). These results reveal a striking constraint imposed by our real-world motor experiences on mental imagery, and also demonstrate a way that we can overcome such constraints.

Are things that are hard to physically move also hard to imagine moving?