J.M.
My 16 month old also hits. . . We have NEVER hit him EVER. . . they just are feeling things out. Anyway don't hit your child and expect them not to. We firmly tell him not hitting and if he does it again give him a time out (which don't last but about 45 seconds. . .) he usually gives me a hug when he gets out. Be firm and consistent do not hit your children - you teach by example - hitting your children teaches them to hit and that the bigger person wins.