Fig. 1From: Spatial thinking in infancy: Origins and development of mental rotation between 3 and 10 months of ageStimulus object used in Christodoulou, Johnson, Moore, and Moore (2016), Constantinescu, Moore, Johnson, and Hines (2018), Heil, Krüger, Krist, Johnson, and Moore (2018), Moore and Johnson (2008, 2011), and Slone, Moore, and Johnson (2018). Infants were habituated to a video of this object—or its mirror-image—rotating back and forth on its vertical axis through a 240-degree angle. After habituation, infants were tested with a video showing this object (or its mirror-image) rotating back and forth on its vertical axis through the previously unseen 120 degrees of arc. Adapted from Moore and Johnson (2008), Fig. 1Back to article page