Early, controversial studies of chimpanzees and language showed that these animals can understand the basics of language on the two-and-a-half-year- old level of children. Recent studies have shown that other chimpanzees, such as the Bonobo or pygmy, are more humanlike and adept at language and communication than the earlier chimpanzees who were studied.
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Explanation
The article suggests that chimpanzees are now viewed in a different and more positive light concerning their ability to use language and to communicate.