A 4 year old pygmy chimpanzee (Pan paniscus) has spontaneously begun to use symbols
for the purpose of communicating. Other apes have required explicit training before they …

Investigated, longitudinally, language acquisition, using 2 pygmy chimpanzees (PCs) that
have spontaneously begun to use symbols to communicate with people and several …

In this study we compared the abilities of chimpanzees and human children to imitatively
learn novel actions on objects. Of particular interest were possible differences between …

In this research, we asked whether 2 chimpanzee (Pan troglodytes) subjects could reliably
sum across pairs of quantities to select the greater total. Subjects were allowed to choose …

Performance by individual animals of three species of great apes (Pan troglodytes, Pan
paniscus, and Pongo pygmaeus) and capuchin monkeys (Cebus apella) was assessed by …

What are the implications of similarities and differences in the gestural and symbolic
development of apes and humans? This focused review uses as a starting point our recent …

Sue Savage-Rumbaugh's work on the language capabilities of the bonobo Kanzi has
intrigued the world because of its far-reaching implications for understanding the evolution …

Human spoken language and nonhuman primate vocalization systems have traditionally
been regarded as qualitatively different from one another with respect to their semanticity …

Animal consciousness has long been assumed to be a nonviable arena of investigation. At
best, it was thought that any indications of such consciousness, should it exist, would not be …

While numerous publications have shown that apes can learn some aspects of human
language, one frequently cited difference between humans and apes is the relative …