 A society might have a morality that takes accepting its traditions and customs, including accepting the authority of certain people and emphasizing loyalty to the group, as more important than avoiding and preventing harm. Such a morality might not count as immoral any behavior that shows loyalty to the preferred group, even if that behavior causes significant harm to innocent people who are not in that group. The familiarity of this kind of morality, which makes in-group loyalty almost equivalent to morality, seems to allow some comparative and evolutionary psychologists, including Frans De Waal (1996), to regard non-human animals to be acting in ways very similar to those that are regarded as moral.