Infants at this age are known to assign goals and intentions to geometric figures; hence the researchers used a series of animated sequences to test infants' responses to aggression.
In their experiments, researchers showed infants an aggressive 'social interaction' between a blue ball that attacked and violently crushed a yellow cube and found that the babies preferentially reached for the victim rather than the aggressor.
Infants' behaviour remained consistent when the roles of the shapes were reversed and when a neutral, non-aggressive shape was introduced in the video, suggesting that their preference for the victim was not out of fear of the aggressive shape, according to Yasuhiro Kanakogi and colleagues from Kyoto University and Toyohashi University of Technology, Japan.
"This simple preference may function as a foundation for full-fledged sympathetic behaviour later on," they added.
The study was published in the journal PLOS ONE.
