Yes, childhood is a key factor in who people are in adulthood. Traumatic events in childhood create phobias, likes and dislikes, and even core personality features. For example, children that are abused tend to be abusive parents. The flip side is also true, college students succeed more if they have support from their parents. Also, siblings come into play. Children with opposite-sex siblings tend to have happier marriages if they are wed to the opposite sex.
It is clear that experiences in childhood encode and determine behavior later in adult life.
Behavior is a choice in the moment, not determined by past experience.
The past can form reactions to the present but it is not deterministic of adult behavior.
This page was last edited on Wednesday, 12 Feb 2020 at 14:31 UTC