conformity.

social facilitation.

compliance.

obedience.

That the people witnessing the emergency have not had experience with this particular emergency situation

That helping with be time-consuming for the people witnessing the emergency

That one of the people witnessing the emergency has been directly asked for help by the victim.

That there are many other people around to offer help

Similarity, Proximity,  Positive Affect

Affect, Behaviour, Cognition

Empathy, Similarity, Moral Elevation

Agreeableness, Extraversion, Conscientiousness

It is evident throughout human history

It cannot be studied scientifically

It is evident in infants younger than 2 years old

It is seen in animals other than humans

Cooperative

Individualistic

Competitive

Deceitful

People who were asked to eat insects under the guidance of a pleasant experimenter were less likely to endorse eating insects,  than participants who did so under the guidance of an unpleasant experimenter

People who ate insects  under the guidance of an unpleasant experimenter were more likely to state they enjoyed eating insects, compared to those who did so under the guidance of a pleasant experimenter

People who are paid a large amount of money to  lie about their attitude,  are more likely to come to agree with the lie,  compared to those who are paid a small amount of money