This is a reinforcing loop describing the relationship between a parent's frustration level towards their spirited child.
Insight: Since parents cannot control their child's behaviour, they can only control their own perception of the issues. As the parents' frustration level decreases, they will be able to respond to child in a more useful manner.
Trying to use a diagram to show that a bad "early start" leads to low rates of progress/yr. With low rates of progress/year the kiddos fall much shorter than their peers and can't meet the milestones expected for the cohort. Failing to meet these, they fail and other negative long-term consequence are likely to follow.