If you ever though that your dog can “tell” if you look content or angry, you may know something. Dogs may be able to discriminate between happy and angry human faces.
Scientists trained a group of 11 dogs to distinguish between images of the same person making either a happy or an angry face. During the training, each dog could see only the upper half or the lower half of the person’s face (see the title picture).
Then they tested the dogs’ ability to discriminate between human facial expressions by showing them different images from the ones used in training. The researchers found that the dogs were able to pick the angry or happy face by touching a picture of it with their noses several times.
The study showed that the animals had figured out (understood; discovered) how to transfer what they learned about human faces during training to new faces in the testing stage. The results show that the successful dogs realized that a smiling mouth means the same thing as smiling eyes.
Previous research had demonstrated (proved; showed) that dogs are able to distinguish between different expressions in people they know, even if the animals are shown only part of the face, such as the eye region.
At this point, it is not clear why dogs have the ability to recognize different facial expressions in humans. To us the most likely explanation is that they have been living with humans for a long time, during which the dogs have learned a lot about human facial expressions, which is the look on someone’s face that shows how they feel.
So, the next time when I don’t know whether I am happy or annoyed, I should probably ask Jack, my little dog, to help me out.
What do you think?0 This entry was posted in Reading Intro (S. H. School) by Parviz with ۵ comments