Part C

A number of excuses are given over the course of the film. The brother and sister of one of the perpetrators said they initially assumed the killer was drunk and disoriented. Later, they say that they didn't want to be involved in something 'negative.' The girlfriend of one of the killers also said he initially sounded drunk and confused. When she discovered the body of the victim, she called 911, but refused to give much information. The mother of one of the killer's friends says she was initially told the victim was fine, and then assumed he had been taken to an area hospital after the body was discovered. When 911 was called -- twice -- the vague attitude of both of the callers caused emergency personnel to treat the call as a non-emergency.

Decision tree

Source: Prevos, Peter. (2006, January 3). Explanation models for the bystander effect...
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