<P> The other approach, that of Evolutionary psychology, continues to take the view that genetic relatedness (or genealogy) is key to understanding human kinship patterns . In contrast to Sahlin's position (above), Daly and Wilson argue that "the categories of' near' and' distant' do not' vary independently of consanguinal distance', not in any society on earth ." (Daly et al. 1997, p282). A current view is that humans have an inborn but culturally affected system for detecting certain forms of genetic relatedness . One important factor for sibling detection, especially relevant for older siblings, is that if an infant and one's mother are seen to care for the infant, then the infant and oneself are assumed to be related . Another factor, especially important for younger siblings who cannot use the first method, is that persons who grew up together see one another as related . Yet another may be genetic detection based on the major histocompatibility complex (See Major Histocompatibility Complex and Sexual Selection). This kinship detection system in turn affects other genetic predispositions such as the incest taboo and a tendency for altruism towards relatives . </P> <P> One issue within this approach is why many societies organize according to descent (see below) and not exclusively according to kinship . An explanation is that kinship does not form clear boundaries and is centered differently for each individual . In contrast, descent groups usually do form clear boundaries and provide an easy way to create cooperative groups of various sizes . </P> <P> According to an evolutionary psychology hypothesis that assumes that descent systems are optimized to assure high genetic probability of relatedness between lineage members, males should prefer a patrilineal system if paternal certainty is high; males should prefer a matrilineal system if paternal certainty is low . Some research supports this association with one study finding no patrilineal society with low paternity confidence and no matrilineal society with high paternal certainty . Another association is that pastoral societies are relatively more often patrilineal compared to horticultural societies . This may be because wealth in pastoral societies in the form of mobile cattle can easily be used to pay bride price which favor concentrating resources on sons so they can marry . </P> <P> The evolutionary psychology account of biology continues to be rejected by most cultural anthropologists . </P>

Which pattern of kinship names is the most common in europe and north america