Be it helping a friend when they were sick or helping a stranger find an address or rescuing an injured animal, we have engaged in such behaviour at least once in our lifetime. This kind of behaviour does not necessarily have any immediate benefit for the person engaging in it, which is why it is referred to as prosocial behaviour. But, when there are no immediate benefits for the person, why do they engage in such prosocial acts?
Social psychologists have tried to answer this question by giving three hypothesis.