Primates are closely related to human beings and provide us great
insights into what life would have been like for our hominid (human) ancestors,
specifically species in the Australopithecus
and Homo genera. As such primate studies are primarily in the
realm of physical anthropology, but today’s blog post will focus on primate
studies not from a physical anthropological perspective but from a linguistic
anthropological one. Linguistic
anthropologists have dabbled in primate studies in order to gain a better
understanding of how language may have developed among our early hominid
ancestors and from there have learned about what specifically makes our human
language and means of communication so unique from other forms of communication
among various animal species, specifically our primate cousins. This blog post will discuss some of those
studies and the information gleaned from them.
Studies of primates have demonstrated that primates can
indeed communicate, although not in the same capacities as we, humans, can and
do. Primates communicate in a system of call systems, which are a series of
sounds that vary in duration and intensity and are associated with specific
environmental stimuli. These sounds
serve the purpose of primates by informing them of potential resources and
dangers that individuals or groups may encounter in their environments, but
these sounds are also incredibly inflexible as they are limited in type and
use. This means that if a primate
encounters two different environmental stimuli simultaneously the primate can
only express one response, not two. This
may occur when a primate encounters food and a predator at the same time. In situation the primate can only signal one
of two sounds: one for food or one for predator/danger but not both. Also, this inflexibility in sounds means that
the same sound may be used for completely different situations even if a new
response is warranted. For example, a
primate may react to encountering a new situation (e.g. a new food source) the
same way as it would to a predator by utilizing the fear/danger response.
It is believed that our hominid ancestors utilized a similar
form of communication, but as their brains evolved and developed they
eventually began to manipulate the sounds they could produce and associated
them with specific meanings, thoughts, and abstract ideas. This is why we, as humans, can speak and
communicate, whereas other animals cannot.
We also have the capacity to learn what these sounds mean and their
associations, which is another reason why we have language and other animals
are not considered to possess language.
| Figure 1: Washoe & Beatrice Gardner |
But primate studies have provided linguistic scholars
further insights human and primate communication. Experiments demonstrate that primates,
specifically apes (i.e. chimpanzees, gorillas, bonobos) can learn to use
language, although they cannot speak.
They can learn and use sign language when taught by a human
handler. The first primate to do this
was a chimpanzee named Washoe (Figure 1).
She was taught sign language by R. Allen and Beatrice Gardner, who were
stationed at the University of Nevada-Reno.
Washoe learned over 100 signs representing several English words and
within a year was able to communicate with short, basic sentences. Studies of Washoe were followed up by a study
on another chimpanzee named Lucy (Figure 2).
Primatologist Roger Fouts taught Lucy a series of signs, and she
demonstrated similar language learning capabilities as Washoe. She, however, took her language skills a bit
further as she demonstrated the ability to teach language, swear, and lie, but
it was Lucy’s ability to teach language that provided scholars insights into
the cultural transmission of
language. This means that language is
learned, which has since been identified as a key feature of language.
![]() |
| Figure 2: Lucy & Roger Fouts (Image Source: Allposters.com) |
While work with chimpanzees was pioneering the work with
gorillas provided more insights into language and language acquisition. Penny Patterson worked with a gorilla named
Koko (Figure 3), and Koko demonstrated a greater capacity to learn. Koko learned far more signs than her
chimpanzee predecessors and had a greater ability to compose thoughts. She even demonstrated the ability to create
new words, which is identified as productivity. She connected specific signs and words to
describe objects that she had seen but didn’t have a sign for. She also demonstrated displacement, which means that she would discuss matters that were
not present or were in the past. This
occurred when Koko apologized to Penny, her handler, for biting her in the
previous days.
![]() |
| Figure 3: Koko & Pet Kitten |
There is at least one case of a Bonobo learning to communicate
with humans, too. Kanzi (Figure 4) is
one such Bonobo housed at the Language Research Center at Georgia State
University. He learned and mastered
communication via a keyboard with symbols, referred to as a lexigram, and he
responds to specific human words by typing the symbol on the keyboard. He, like the other primates, has demonstrated
an ability to communicate with humans through the use of the keyboard, but he
also can communicate through responding to commands given to him by his human
handlers.
![]() |
| Figure 4: Kanzi & Sue Savage-Rumbaugh |
These primate studies show that primates have the ability to
learn and use language, but this is only after they have learned means of
communication from humans. There remains
no evidence of independent invention of language among primates-be they in
captivity or in the wild. As such there
are critics of these studies and primates’ ability to learn language, but it is
important to note that none of these critics have actually worked with primates
in these capacities. I do, however, want
to leave you with several videos so you can judge for yourself whether or not
these studies are legitimate or not in case you, too, have your doubts:
References:
Gezon, L., & Kottak, C. (2014). Cultural
Anthropology McGraw-Hill 







