ED schema develops very early on in childhood in people where the main caregiver was not emotionally supportive. This is different from physical deprivation. The child was well-fed, had toys to play with, and their other physical needs were met too, but their emotional needs were ignored. It is actually the case that children are very stressed in these situations and tend to develop ways to try and make sense of them and their reactions.
When a child’s emotional needs are not met, he or she feels invisible, uncared for, and unimportant. Basically, they feel like their existence doesn’t matter. They fail to develop a connection to those around them.