Do not verbally threaten a Group child, regardless of how badly they misbehave. Should you need to correct a Group child, note it in your diary and inform the Teacher or Parent why this was necessary.
Never physically chastise a Group child, ie. smack, push etc.
A Group child can also feel threatened by the manner in how they are spoken to. Don't speak down to a child. Standing or leaning too close while you are speaking to them can also make a child feel intimidated.