A child’s personality is only part of the equation. Parent’s personalities are already formed and they are set in their ways, not to mention stronger and imposing by the nature of the relationship.
Children’s personalities are judged from the parent’s perspective and in most cases both parents will not agree because each parent comes with their own set of measurements and standards.
If one parent is an introvert and the other an extrovert, they will be judging their children from opposite platforms. Their introverted child might seem normal to the introverted parent and lethargic to the extroverted parent. While the extroverted child, will be deemed normal by the extroverted parent and hyperactive by the introverted parent.
Everything we notice, we compare to what we know and to ourselves. It is that comparison that forms our final judgments. Objectivity is impossible to achieve from a single perspective or frame of reference.
Letting children be who they are should be the priority. Teaching them to relate well to others, adapt to society and follow their hearts while keeping true to themselves.