E.g. Freud proposed that girls develop weaker superegos than boys because they do not experience castration anxiety and, as a result, are under less pressure to identify with their mothers and internalise their morals. This means that females should be more prone to criminal behaviour than males. This is a limitation because this means that females should be more prone to criminal behaviour than males. However, this is not supported by offending statistics and the male-female ratio of inmates in prison.