Examples of the emotions displayed in the videos used in Experiments 1-3 depicting happy and angry body movements. In Experiments 1-2, infants viewed a pair of happy and angry bodies while hearing either a happy or angry vocalization simultaneously. In Experiment 3, 3.5-month-olds first saw two identical bodies (either angry or happy) side-by-side during familiarization, and later saw a happy and an angry video during the test trials, but there were no vocalizations at any time. Infants in the upright conditions viewed stimuli upright, whereas those in the inverted condition saw the same stimuli rotated 180 degrees.