I had this same problem with my daughter, who will be two in Nov. Being a former pre-school teacher, I learned quickly how fast sitting a chid in time-out works. I never thought my little girl would ever sit there for that long but after a few times of me putting her back in the same spot every time she got up, and follow through with the same type of discipline each time she did something she knew was wrong really worked. I started doing this when she was about 13 months. Now she's to the point I just have to mention time-out and she stops immediatly and runs into her play room to do something else. It's just a matter of follow through an not giving up when she refuses to sit. We didn't hold her down or anything like that, we'd just sit her there, sit in front of her and discuss what happened to her and why she is in time-out, and if she got up we'd get her and bring her right back and start the time over again. Rule of thumb for time-outs is one minute for every year they are old. And 1 minute of no play time for a 14 month old seems like a life time. Just get an egg timer, and time it out. And once that ding is up, we tell her she can get up and to give us hugs and kisses and tell her we love her. It worked with my child, and many others I taught in pre-school. But, each child is different so it can end up being a long trial and error process. Good Luck!!