What is the age of the child? There are certain behaviours that are age related but there can be other reasons as well which need to be looked into. There are various reasons that can play a role like temperament, aptitude, school and family environment etc.A good case history will determine what can be the possible cause.
Next Steps
Consult a psychologist for better guidance if you know any. Or you can consult me as well, i am a psychologist.
Health Tips
Do not put any kind of pressure on the child as it is not known what is causing this.