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Story summary
- Professor Erica Cartmill and team found captive orangutans prefer food paired with laughter sounds.
- The study used six orangutans at two zoological institutions trained to locate treats under moss or sawdust.
- Playback of orangutan laughter versus wind sounds preceded each trial.
- Four of the six orangutans consistently chose the bowl paired with laughter.
- Dr. Adriano Lameira called the results evidence of social influence on food choice.
