Bystander Effect

Bystander effect
Altruism in humans it’s one of this behavior what psychologist and other people can’t understand. Altruism is selfless concern for the welfare of others. Simply we don’t want any price for helping others.   However sometimes we are in situation when someone needs help but no one helps him.   In psychology we call that bystandarism.   Which factors might influence that?
Usually when we are in group we are less to help people who are suffering than we are alone. Experiments made by John Darley and Bibb Latane shows that people who are around us have a big influence what action we choose. In one experiment, subjects were placed in one of three treatment conditions: alone in a room, with two other participants or with two confederates who pretended to be normal participants. As the participants sat filling out questionnaires, smoke began to fill the room. When participants were alone, 75% reported the smoke to the experimenters. In contrast, just 38% of participants in a room with two other people reported the smoke. In the final group, the two confederates in the experiment noted the smoke and then ignored it, which resulted in only 10% of the participants reporting the smoke. This whole situation we call in psychology diffusion of responsibility. We simply feel more pressure in group than if we are individuals.
Second factor which might influence this kind of behavior is that we need to behave in correct and social acceptable way.   If we see someone suffering and no one helps him we simply react the same as the group. We thinks that this is the right way to react and we do it the same.  
All this factors influence bystander effect. We simply work better alone that in group. How could we change it? This shows that we are more individuals than people who try to work in group.