
I grew up with a neighborhood kid who was a nice guy but burst into tears at even the tiniest of scrapes--heck, even if he fell down--so we always called him a crybaby. He seemed to be very tuned to his sensory environment--in our gang's perspective, overly tuned--hence the epithet for his behavior. The many unjust cruelties of childhood notwithstanding, was that really a fair accusation? There is growing evidence that may supply a solid molecular answer to this question. It may reveal the accusation to be not only emotionally unkind but also biologically unsound.


