Question
My son is 3-years-old and is a sweet boy and had a pretty good first two and a half years. Three months ago he started bluntly saying "No" to us and being more aggressive towards his brother, and whining a lot. Our 4-year-old was aggressive with him before trying to compete for our attention (which we are already in the process of fixing with your advice including kicking him out of the Garden of Eden with the three strikes). Anyway, I wonder if the same technique can be used with a three-year-old, such that he stays in his room for the whole day, or what other advice you would recommend so that these behaviors don't increase with age.
