![enter image description here][1] **A.** Context figures, shape-and-area change figures, and area-only change figures for Experiments 1A and 1B. The figures bounded by red boxes are different shapes and different sizes, and they were presented in alternation on one side of the screen. On the other side of the screen, a size change but no shape change was presented. Half of the infants saw the left figure in the red box alternate with the larger version of itself depicted directly below it, and half of the infants saw the right figure in the red box alternate with the smaller version of itself, depicted directly below it. The length, angle, and area measurements are provided for each figure. **B.** Progression of displays in Experiment 1A. On one side of the screen, infants saw a triangle changing in shape and in area by a factor of 2, and on the other side of the screen infants saw a triangle changing in area only (also by a factor of 2). At each presentation, the figures varied randomly in position, size, and orientation (+/- 0°-30°). The type of change switched sides between trails, and the starting location of the shape-and-area change side was counterbalanced across infants. [1]: https://files.osf.io/v1/resources/b3g52/providers/osfstorage/5ea8accc76188b021b91232d?mode=render