True or not, there seems to be a link between the will to survive and survival, even with people who are not consciously aware. Some people in (and out of) the medical community swear by it.
Yup! I have seen it many times in combat, ER, ICU's etc.
Both ur guys and the bad guys. Very hard to stop a guy that doesn't want to be stopped and die. Very easy to kill or stop a guy that doesn't know he's in a fight, or doesn't have either a will to live, or a strong will to live. Don't ever underestimate physical condition either. Subjectively I personally put greater weight on the person's will, but physical condition IS a major component.
Don't ever count on a successful stop with a handgun, it's not a magic wand and it aint a rifle. Keep shooting until they are down and/or out of the fight. And even when down, they may not be out of the fight.
The ONLY thing approaching a sure single shot stop is a CNS hit. Otherwise, remember the vast majority of folks shot by handguns live. Number one reason is shot placement, number two reason is lack of power vs rifle/carbine/shotguns.
Immediately killed = stop. Stop does not have to mean killed. Killed may not stop if the BG stops after he hurts you or yours.
Don't confuse Killing with stopping. Killing will stop, but the question is the time frame of the kill, immediately or some later time, seconds, minutes, hours, days?
The only effective way of effecting a faster stop with handguns is a bunch of "good" hits with "high quality" bullets, short of a CNS hit, gives best POSSIBILITY of a timely stop. (drop the fluid level, let them bleed out, Hypovolemia, the faster the better = more holes)
AS recommended by the leading Terminal ballistic researcher and the FBI, if immediately stopping the bad guy is necessary and the desired goal, when ever possible use a shoulder weapon.