Babies can tell when you have been lying to them, according to a new study.
Although babies are known for copying adults' behaviour, a new study shows babies will only imitate adults that have previously proven themselves trustworthy.
If an adult has previously displayed unreliable or dishonest behaviour, the baby is less likely to mimic them, according to LiveScience.
Researchers divided 60 babies into two groups. In the first group, "unreliable" experimenters looked inside a container while expressing excitement, and invited the babies to discover whether the box contained a toy or was empty. For that group's experiment, the box was empty.
The second group had "reliable" experimenters, so when the babies copied the adults' enthusiastic behaviour and looked inside the box, they found a toy.