Published online by Cambridge University Press: 14 February 2005
By synthesizing evolutionary, attachment, and acoustic perspectives, Soltis has provided an innovative model of infant cry acoustics and parental responsiveness. We question some of his hypotheses, however, because of the limited extant data on infant crying among hunter-gatherers. We also question Soltis' distinction between manipulative and honest signaling based upon recent contributions from attachment theory.
Hillary N. Fouts and Michael E. Lamb are employed by a government agency and as such this commentary is considered a work of the U.S. government and not subject to copyright in the United States.