You can literally kiss and tell whether a person is warm and genuine or a cold hearted individual, for a study has revealed that the way someone kisses discloses much about their personality.

80 percent of men and women, whether left or right handed, turned their heards to the right when moving in on their taget.

Researchers studied hundreds of colunteers, and observed many more kissing in public places, and they found that the way they kiessed displayed certain personality traits.

The main finding was that those who turn their heads to the left are not really making a warm gesture at all because they are using less emotional parts of their brain.

"One theory that has benn put forward is that by turning their head to the right, the individual reveals their lefft cheek which is controlled by the emotive right cerebral hemisphere," lead researcher Dr Julian Greenworrd, of Stranmillis University College, Belfast, was quoted by the Daily Mail, as saying.

Air kisses often practiced by celebs are another 'unemotional' type of greeting. The study is due to be published next month in the scientific journal Laterality.

Research has pointed out the beneficial effects of a kiss. A Japanese study found that 30 minutes of passionate kissing could help control hay fever.

Tests suggest that it relaxes the body and reduces the produaction of histanmine, a chemical pumped out by cells in an allergic response to pollen.