
A study published in June in Nature Human Behavior has concluded that babies are able to understand when adults make mistakes and tend to rebuke them.
According to research led by investigators from Osaka University and Otsuma Women's University in Japan, punitive behavior towards those who are mistaken can begin in babies up to 8 months of age. Scholars say this is evidence that morality may be innate.
Since it is impossible to know what is going on in a baby's head by asking them, the study involved recognising 24 8-month-old babies with a simple video game, in which anthropomorphized forms move - squares with eyes drawn on them with a screen interacting with each other.
The place where the babies' eyes moved was recorded by a vision tracking device, and as babies watched the shape movements, they learned an important feature of the game: if they let their gaze stay in a figure for enough time, one of the squares fell down.
After the babies had learned that feature of the video game, the researchers made things more complex. Now, as the babies watched, one of the squares with eyes would behave occasionally badly, colliding with another and crashing it into the edge of the screen.
After several such incidents, the babies began to respond, with approximately 75 percent of them directing their gaze from the "guilty square" and keeping a look there until the square disappeared from the game. According to Japanese scientists, this was effective evidence that the babies were giving him a penalty for the square's misconduct.