Another variable that would influence a childs attachment and well being in life could be the background of that childs family. Different cultures tend to have different parent-child relationships. For example one culture may not encourage too much affection or communication to establish a strong relationship between a child and a parent which would cause an anxious/avoidant attachment. If a child grows up like this it might lead to a negative outcome because their lack of connection to their family could cause a lack of connection to society and other people in their lives.
I also agree that culture could affect a child's future relationships, especially with the example you provided. A child that was void of much communication and affection, it could possibly have a negative affect on their future relationships with people in society.
