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By William D. Hopkins (Eds.)

ISBN-10: 0123741971

ISBN-13: 9780123741974

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Extra resources for The Evolution of Hemispheric Specialization in Primates

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These behavioral associations with the hand preferred to pick up food in a relaxed context include social interactions. Westergaard et al. [2003, 2004] have shown that left- and right-hand preferring rhesus macaques exhibit different levels of dominance/subordinance and aggression. , 2003]. , 2004]. , the majority of individuals having a lateralized brain in the same direction). In other words, if left-handers express one particular constellation of behavior and right-handers express another, then the population must have the same direction of hemispheric specialization.

Given that two species had an anticlockwise preference and one preferred to circle clockwise, it seems that the directional bias is a characteristic of the bees rather than being secondary to an asymmetry in the structure of the florets. , 2006]. Honeybees were trained on the standard proboscis extension reflex paradigm and it was found that they could learn about odors when using their right antenna but were less able to do so when using their left antenna. This asymmetry is directionally biased.

The existence of directional lateralization in a species may well be an evolutionary stable strategy Lateralization in Its Many Forms [Vallotigara & Rogers, 2005], but this does not mean that genes have a deterministic role in lateralization. On the contrary, the ontogeny of lateralization depends on the interaction of genes and experience. Two model systems have been instrumental in demonstrating the interaction between genetic, hormonal and early experiential effects on the development of lateralization.

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The Evolution of Hemispheric Specialization in Primates by William D. Hopkins (Eds.)

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