Hi, I am a 44 year old single mom of a 3 year old little girl. Recently, my daughter has been "out of control". She whines all day, cries to the point of vomiting, refuses to mind anything I say, throws tantrums, increases the volume on her whines and cries when I tell her to be quiet, throws objects and has bitten me a couple of times, but I think I may have cured that. I don't know if this is normal behavior for a girl her age. We live with her grandpa and grandma and she is the only child in the house. I have disciplined her by time-outs, no cartoons, yelling, spanking, etc., but nothing seems to work. Is this how normal kids act? I am at wits ends and I don't know what to do. Any suggestions or comments would be greatly appreciated.