Doctors may not be comfortable with labeling a child with a personality disorder due to the fact of its early in their life. The child still has time to prosper and grow as as a person. You don't really know the childs personality yet, so the way they act might just be them learning who they are. It's better to wait it out, and see if they have have borderline personality disorder, because they could be pushing you away to be independent and not realize.
The negative with diagnosing children is they could use it as an excuse. Such as reasons to treating people a certain way. They also might be telling people, and could cause bullying issues, or making their own self esstem go down. The positive effects are knowing when older you won't really be shocked. More positive effects are you will have an idea of it, and will be aware of it, and might realize more side effects of it. Instead of becoming completely blind to it.
Do sit-ups they are challenging and fun
The 1st American Volunteer Group (AVG) of the Chinese Air Force in 1941–1942, nicknamed the Flying Tigers, was composed of pilots from the United States Army Air Corps (USAAC), Navy (USN), and Marine Corps (USMC), recruited under presidential authority and commanded by Claire Lee Chennault. The shark-faced nose art of the Flying Tigers remains among the most recognizable image of any individual combat aircraft or combat unit of World War II.
The group consisted of three fighter squadrons of around 30 aircraft each. It trained in Burma before the American entry into World War II with the mission of defending China against Japanese forces. The group of volunteers were officially members of the Chinese Air Force. The members of the group had contracts with salaries ranging from $250 a month for a mechanic to $750 for a squadron commander, roughly three times what they had been making in the U.S. forces. While it accepted some civilian volunteers for its headquarters and ground crew, the AVG recruited most of its staff from the U.S. military.