Supplementary information
From the following article:
Social evaluation by preverbal infants
J. Kiley Hamlin, Karen Wynn & Paul Bloom
Nature 450, 557-559(22 November 2007)
doi:10.1038/nature06288
Supplementary Video 1
This file contains Supplementary Video 1. This movie shows the Helper habituation event in Experiments 1 and 3, in which the Climber attempts but fails to get up the hill and is helped to the top by the Helper (in this case the yellow triangle).
Supplementary Video 2
This file contains Supplementary Video 2. This movie shows the Hinderer habituation event in Experiments 1 and 3, in which the Climber attempts but fails to get up the hill and is pushed to the bottom by the Hinderer (in this case the blue square).
Supplementary Video 3
This file contains Supplementary Video 3. This movie shows the test event in Experiments 1 and 3 in which the Climber looks around and moves to sit next to the yellow triangle.
Supplementary Video 4
This file contains Supplementary Video 4. This movie shows the test event in Experiments 1 and 3 in which the Climber looks around and moves to sit next to the blue square.
Supplementary Video 5
This file contains Supplementary Video 5. This movie shows the Pushing Up habituation event in Experiment 2, in which an inanimate circle rests at the bottom of the hill before being pushed to the top by the Pusher-Upper (in this case the blue square).
Supplementary Video 6
Supplementary Video 6. This movie shows the Pushing Down habituation event in Experiment 2, in which an inanimate circle rests at the top of the hill before being pushed down to the bottom by the Pusher-Downer (in this case the yellow triangle).
Supplementary Video 7
This file contains Supplementary Video 7. This movie shows the Neutral habituation event that is paired with the Helper event (shown in Supplementary Video 1) in the Helper/Neutral condition of Experiment 3. The Neutral character comes onto the screen and dances up the hill while the Climber rests at the bottom, performing identical physical motions to the Helper, but not affecting the Climber in any way.
Supplementary Video 8
This file contains Supplementary Video 8. This movie shows the Neutral habituation event that is paired with the Hinderer event (shown in Supplementary Video 2) in the Hinderer/Neutral condition of Experiment 3. The Neutral character comes onto the screen and dances down the hill while the Climber rests at the bottom, performing identical physical motions to the Hinderer, but not affecting the Climber in any way.
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