Babies crying
Because a baby is unable to put its feelings and desires into words it communicated vocally with other people by crying. Crying in a baby is by no means only associated with unhappy experiences, such as being hungry or feeling unwell and tears do not normally appear unless the baby is really distressed. Most mothers get to know the vocabulary of cries used by their baby and believe that they can tell with some accuracy what it wants from the nature of its cry. For instance, if a baby is hungry it will most likely continue to cry if picked up, but if it is crying from boredom it will stop crying when picked up or when moved to other more interesting surroundings.