<Li> Observable behavior: Observing others behavior is the easiest form of norm information . However it is susceptible to the fundamental attribution error . The fundamental attribution error is the tendency of individuals to view other's behavior as a trait rather than a factor influenced by situational variables (Ross 1997) </Li> <Li> Direct / Indirect: "direct (what words mean) and indirect (what words imply) communication, also has its flaws . Information may be distorted intentionally or unintentionally ." Ross 1997 </Li> <Li> Self: Personal attitudes and behaviors also have an influence over the perception of norms However it is highly susceptible to "the false consensus effect" </Li> <Li> The false consensus effect is when a person thinks that others think and act as they do . (Mullen and Hu) </Li>

The three types that broad social norms indicate when helping is appropriate