and people expect a handshake," says Pachter in her new book "The Essentials Of Business Etiquette." Basically, she says that if you don't shake someone's hand, "you are cutting yourself off from ...

That said, shaking with your left hand goes beyond mere logistical issues—it is simply seen as the “incorrect” way to shake hands. In some cases, a left-handed handshake might be used deliberately as ...