my 19mth old son has started scratching, pinching, slapping and pulling hair. Most times hes does it when hes frustrated but can also do it when he is playing nicely along side his older sister, he'll just suddenly scratch or pull her hair while at the same time smiling??. I go down on his level and say no sternly but its like it doesnt compute with him and i have been doing this for 4 mths! Is it too early to use the time out option??? any help or advice would be very welcome