Everyone fakes a laugh once in a while – whether it's smarmy politicians, cheesy gameshow hosts or the suckup at work. But is that pseudo snickering really fooling anyone? Turns out it can, but not ...

According to a recent cross-cultural study on the perception of real verses fake laughter, people can tell when your heart's not in it. But it's no big deal. With the help of 884 study participants ...