They may learn their is something inherently wrong with them because of the way they feel. They may have difficulty regulating their own emotions. Surely there are different effects. They have high self-esteem, learn well and get along well with others. Kids won't talk about things if parents are uncomfortable with topic.
Some parents take too much of a role - act as rescuer.
I just don't like to see him upset. 57 disapproving parents focus on behavior. Don't waste your time or tears, some parents think. Some parents who weren't allowed to get sad, get impatient or jealous of kids emotions. Feel bitter towards their parents and take it out on their kids.