Ten schools in Cardiff have adopted The Roots of Empathy scheme to teach young children to empathise with one another.
The course gets children to engage in communicative tasks with the babies, which is said to increase their levels of emotional literacy.
The scheme set up by Action for Children lasts for nine months and originates from Canada. It has also been adopted in Scotland.
Debra Ennis from the charity was originally "sceptical" about the scheme but after seeing positive results in Scotland, she is now in support of babies going into classrooms.
An example of the scheme's success comes in the form of a young boy who was quite detached from his classmates. After he spent some time with one of the babies, he said something to the effect of: "This baby thought I was special. No-one's ever thought I was special."
The scheme hopes to achieve its aims of reducing levels of aggression in children, as well as helping them build more respectful relationships with their peers.
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