For the most part, people who are highly educated & affluent tend to have small (1-2 children) or at the most, medium sized families(3-4 children).They know that in order for children to thrive, they must be raised in the most conducive environments educationally, emotionally, psychologically, & socioeconomically.They are cognizant that the smaller the family, the better care & individualized attention such children will receive from them.They further realize that in order to thrive intellectually, there must be a reasonable adult to child ratio.They feel that by having small families that the adult to child ratio is even thus beneficial to their children.
They know that there is less stress all around in small & medium sized families than there are in larger families where there are all types of stresses from emotional/mental to socioeconomic.They maintain that in order for children to develop optimally, there is to be as little stress as possible.Furthermore, studies have substantiated, that smaller families have less overall stress than larger families.In small families, there is less chaos as there are more advantages beyond the mere rudiments of struggling. In small families particularly, parents can interact with their children without time constraints.Also, parents have MORE time to interact with each other apart from their children.
Conversely, it is the less educated, less intelligent, & less affluent who have the largest families. They oftentimes have children without thinking about the emotional, psychological, & socioeconomic ramifications of their actions upon themselves & their already existing children. Parents of larger families(5 or more children) have a quite different mindset from parents of small/medium sized families. Parents of larger families are unconcerned about the higher cultural aspects regarding children's development. In fact, they can be classified as being unconcerned about their children beyond providing them with just the bare rudiments, if that.
They leave their children to their own devices. They are unable to give their children the individualized care & attention they need because the adult to child ratio is woefully uneven. Since there is no span of parental control in the family, children raise themselves/each other. Oftentimes, only the youngest child/children receive parental care while the others are cast aside, even neglected. Also, oldest children are the actual parents in larger families.