Parenting 9 year old "What is happening to my child?" Children at this age can become very critical and argumentative, or very moody and withdrawn. Nightmares, irrational fears, headaches and stomachaches often arise. Some children feel as if no one at school likes them, or others become suddenly self-conscious about being rich, poor, or otherwise "different." Parents may be accused of being unfair or of not understanding, as the child rushes off and slams his or her door.