![enter image description here][1]
[1]: https://files.osf.io/v1/resources/thbpv/providers/osfstorage/6251c970840dd715b25c807c?mode=render
A child participant (**A**) and screen shots of example trials. In the curved arc condition (**B**), participants compared curved arcs (incorrect; left) to curved geodesics (correct; right). In the straight arc condition (**C**), participants compared curved geodesics (correct; left) of the same length and curvature as those in the curved arc condition to straight arcs (incorrect; right). The curved geodesics were presented at different orientations across conditions.