He considers it entirely appropriate for biologists to be concerned not only with how biological traits came about but also with what specific organic
features are for, even though most scientists and philosophers
of science place questions
of purpose outside the realm
of research.
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Whereas kissing is commonly perceived as a display
of affection in romantic relationships,
research highlights a far more nuanced explanation regarding the «function»
of kissing within relationships.1 Some
research suggests that kissing enables individuals to assess the quality
of potential partners by putting individuals in close proximity, making it easier to examine
features that are associated with mate value, such as breath and skin texture.2 Other
research suggests that kissing elevates levels
of arousal, which may lead to sexual intercourse.3 A third body
of research suggests that kissing can influence feelings
of attachment, alleviate stress, and increase relationship satisfaction.4 Given these varied explanations, the question remains: is there a single
purpose for kissing or do all these explanations hold truth?