Adults are able to delay gratification. They may not be happy about it but they do it when it is the RIGHT thing to do.
Babies infants toddlers terrible twos? I WANT IT AND I WANT IT NOW! Hissy fit tantrums usually work for them.
So it seems that 40% of Americans subscribe to I WANT IT AND I WANT IT NOW. Temporarily or permanently? Will they survive their demand for INSTANT gratification NOW? More importantly, WILL WE?