Cooperative and trained dogs follow misleading human cues regardless of human beliefs
This study demonstrates that while cooperative and professionally trained dogs are more susceptible to misleading human social cues, they do not appear to utilize a communicator's false belief state to override their own knowledge of a reward's location, suggesting they rely on observable behavior rather than inferring unobservable mental states.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of a preprint that has not been peer-reviewed. It is not medical advice. Do not make health decisions based on this content. Read full disclaimer
To understand how we think about others, scientists often look at the animals we live with. The core question is whether an animal can truly understand that another being sees the world differently than they do. This ability, known as theory of mind, involves realizing that someone else might hold a belief that is simply wrong. For example, if you see a toy hidden in a box, but your friend did not see you move it to a different spot, you know your friend will look in the first box. Humans develop this skill early in life, but proving that animals possess it is difficult. It is hard to tell if an animal is simply watching what a person does, or if they are actually imagining what that person knows or believes. To solve this puzzle, researchers have designed tests where an animal must guess what a human is thinking, even when the human's behavior looks exactly the same in two different situations.
A team of researchers at the University of Veterinary Medicine Vienna set out to test this in dogs. They wanted to know if dogs could figure out that a human was looking for food in the wrong place because the human had missed seeing the food being moved. The experiment involved 120 pet dogs of various breeds. The setup was a room divided by a fence with a wooden tunnel running through it. On one side, a person hid a treat in a bucket. Then, while the dog watched, the person moved the treat to a second bucket. A second person, the communicator, was supposed to know where the treat was. In one version of the test, the communicator watched the treat being moved. In the other version, the communicator did not see the move because a barrier blocked their view. Crucially, the barrier was hidden inside the tunnel, so the dogs could not see it directly during the main test. The dogs had to rely on their own past experience with similar tunnels to guess whether the communicator could see through the barrier or not.
After the treat was moved, the communicator approached the dog and suggested the empty bucket where the treat used to be, using friendly gestures and a warm voice to suggest the dog look there. The dogs knew the treat was actually in the second bucket because they had seen the whole process. The researchers wanted to see if the dogs would ignore the human's suggestion when the human was mistaken, or if they would follow the suggestion anyway. If the dogs were truly reading the human's mind, they should have realized the human was wrong in the second version of the test and ignored the suggestion. Instead, the dogs followed the misleading suggestion just as often whether the human was right or wrong. The dogs remembered the properties of the tunnel and the barrier, but they did not seem to use that knowledge to understand what the human could see.
The study did reveal something important about the dogs themselves, however. The researchers found that the type of breed and the dog's training history mattered more than the human's belief. Dogs bred for cooperative work, such as herding or retrieving, were much more likely to follow the human's misleading suggestion than dogs bred to work independently, like terriers or hunting hounds. Similarly, dogs that had received professional training were more likely to follow the human's cue than dogs without such training. This suggests that while dogs may not be using complex mental reasoning to figure out what a human believes, they are highly sensitive to social cues and are willing to follow human directions, especially if they have been bred or trained to do so. The results indicate that in this specific test, dogs rely on their own observations and their tendency to obey rather than on an understanding of another person's false beliefs.
Drowning in papers in your field?
Get daily digests of the most novel papers matching your research keywords — with technical summaries, in your language.