Intent and discrimination may determine both pro- and anti-social behaviour. Infants may act in seemingly anti-social ways and yet be generally accepted as too young to know the difference before the age of 4 or 5. Berger states that parents should teach their children that "emotions need to be regulated, not depressed". One problem with the assumption that a behaviour that is "simply ignorant" in infants would have antisocial causes in persons older than 4 or 5 years at the same time as the latter are supposed to have more complex brains (and with it a more advanced consciousness) is that it presumes that what appears to be the same behaviour would have fewer possible causes in a more complex brain than in a less complex brain, which is criticized because a more complex brain increases the number of possible causes of what looks like the same behaviour as opposed to decreasing it.