Horse Speech Test (IMAGE) Hokkaido University Caption Horses are shown an angry or happy facial expression on the screen followed by a praising or scolding tone of voice during the test. Horses responded differently in a congruent and incongruent condition. Credit Photo taken by Kosuke Nakamura. Usage Restrictions This image is copyrighted and can be used for reporting this press release if properly credited. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.