Instructions
You will see pairs of short videos of an animated character who is speaking and gesturing. There is no sound. The two videos play at the same time with the same fixed camera.
Your task: decide in which video the character gestures more like a real person, judging only the naturalness of the hand, arm and body movement. Ignore the face and the character's appearance, which are the same in both.
Answer on a five-point scale: left clearly / slightly better, they are equal, right clearly / slightly better. The buttons unlock after both videos have played to the end once. You can replay, pause, scrub. There is no time limit, and you can stop and continue later (open this page again, or enter your resume code on the start page).
A few trials are attention checks and tell you which answer to pick; please read the text on the videos.
Your answers are saved after every trial and cannot be changed afterwards. To continue later, open this page again on the same device, or enter your resume code on the start page.