[ . . . ] many college students have found themselves attracted to someone, only to discover after they kissed them for the first time that they were no longer interested. "In other words," said Gallup, an evolutionary psychologist, "While many forces lead two people to connect romantically, the kiss, particularly the first kiss, can be a deal breaker."
I would agree based on my own experiences.
The UAlbany study also found sex differences in the importance and type of kissing. Males tended to kiss as a means to an end -- to gain sexual favors or to reconcile. In contrast, females kiss to establish and monitor the status of their relationship, and to assess and periodically update the level of commitment on the part of a partner.
Not surprising, is it? Confirms what we already know.
This tidbit interested me as I didn't know the bit about male saliva containing testosterone.
Males, however, were more likely than females to initiate open mouth kissing and kissing with tongue contact. The researchers speculate that the exchange of saliva during kissing may have biological consequences in its own right. Male saliva contains measurable amounts of the sex hormone testosterone which can affect libido.
What's the big "So What?" More insight into the psychology of humans.
The authors conclude that the study provides evidence that romantic kissing evolved as an adaptive courtship strategy that functions as a mate-assessment technique, a means of initiating sexual arousal and receptivity, and a way of maintaining a bonded relationship.