"What's in the first place?" – he asked. "Changes in speech or changes in the brain?"
Ray Jekkendoff, linguist at Tufts University who did not participate in the study, said that the group's conclusion that the ease of expression of some sounds may vary depending on the diet "that different cultures may have expressed certain sounds more often than others" do not speak much about the profound history of the language. "
Other cultural and social factors, like the adoption of sounds from neighbors, can also contribute to the change of language, the authors of the study said. For example, when hunting groups and agribusiness groups were mixed, with Their sounds sounded .
The authors respond that they do not minimize the role of culture, society or knowledge in the development of language. But they say that the physical differences between people deserve a lot of attention when studying the development of human speech, as is done in the study of animal systems.
Some linguists are afraid that, if they are not treated with extreme caution, further physical studies or biological differences in the language may encourage the ethnocentric beliefs that have followed linguistics in the past, especially if the research is publicly interpreted as appraisal judgments of the languages of different groups.
acquire individuals in agrarian societies, and not consider any benefits that may have personality in hunter-gatherer societies, "said Adam Albright, a MIT linguist