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Authoritative: http://dx.doi.org/10.1017/S0140525X08005190   (Publisher's PDF... likely be available here.)

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Abstract

The proposal that language has evolved to conform to general cognitive and learning constraints inherent in the human brain calls for specification of these mechanisms. We propose that just as cognition appears to be grounded in cross-modal perceptual-motor capabilities, so too must language. Evidence for perceptual-motor grounding comes from non-arbitrary sound-to-meaning correspondences and their role in word learning.

@article{namy08BBScomments,
  author={Laura L. Namy and Lynne C. Nygaard},
  title={Perceptual-motor constraints on sound-to-meaning correspondence in language},
  journal={Behavioral and Brain Sciences},
  year={2008},
  volume={31},
  number={5},
  pages={528-529},
  doi={10.1017/S0140525X08005190},
  url={http://www.isrl.uiuc.edu/~amag/langev/paper/namy08BBScomments.html}
}