Infants understand and feel each other's emotions perfectly. This was stated byBrygham Young University in America.
During the study, 40 babies aged 5-7 months watched videos with videos of their peers. The heroes of the commercials were children in a good and bad mood.
The first video session was shown to babies without sound. The second is with sound. During the second session, the children were able to compare the sound with the displayed picture. When laughter sounded, the audience looked at the screen with a cheerful child. When the baby in the second video whimpered, they turned their attention to another screen.