One of the easiest intelligence tests is the “Mirror
self-recognition test”, it’s on a very intuitive level and has something to do
with self-awareness. The test is to put a red mark on your face, you pass if
you recognize that it’s on your own face. Children begin to pass at around 18
months old. Chimps, dolphins, elephants and magpies: all of them passed the test.
However, some monkeys don’t pass the test, even though they’re widely seen as
intelligent animals.
How do animals think?
Often when we’re
thinking about intelligence in other animals, we tend to focus on the cognitive
capacities that we’re super proud of in humans. Humans have tens of thousands
of words at their disposal, but also animals have ways of communicating with
each other: bee do it by dancing, whales sing, chimpanzees’ gesture and scream.
The first
experiment to see if animals could communicate with us in human language was in
1940 with Viki, a chimp. It turned out chimp vocal cords aren’t built for
speaking.
In 1966 two
psychologist raised Washoe, another chimp, like a human child and tried to
teach her American sign language, she learned about 150 signs.
A third experiment
with Nim, concluded that chimps could imitate isolated words but couldn’t speak
in spontaneous sentences or with grammar.
Why is our intelligence similar to that of animals?
Charles Darwin
sketched the “Tree of life” and wrote about the “Theory of evolution”, where he
talks about the “Origin of species”. He thought that all animals evolved from
earlier life forms and all life is related, even if distantly.
“The difference in mind
between man and the higher animals, great as it is, certainly is one of degree
and not of kind”
·
We
develop the ability to live in complicated social structures, so we’re socially
smart, but chimps do too on a smaller scale. Researchers think chimps
experience empathy because they have yawn contagion.
·
We
used to believe we were unique in how we use tools to solve problems, but also
chimps and birds use tools.
·
We
learn from our memories and can plan for future problems, but crows remember
all the seed they hide in the fall in 6,000 different locations.
·
We
have culture: it’s the idea of shared responsibility for our children. Also,
animals do this, taking care of their children
We’re kind of converging on the same abilities, not
because we’re closely related, but because we’ve had similar problems we’ve
faced and we come up with the same cognitive structures.
What is the Behaviorism?
Behaviorism was born in the 20’s when psychology began measuring
behavior. At first, they just look at behavior, but then they argued that the
mind didn’t really matter at all. Any sign of intelligence was just learned
through a system of rewards and punishments.
The psychologist B.F. Skinner thought animals were stimulus-response
machines and that you could teach them almost everything with the right rewards
and punishment. He thought that both human and animal intelligence was just
conditioning.
The linguist Noam Chomsky thought that humans don’t need to be
conditioned to acquire language: we’re built for it. He thought animals were
built for other things: “humans can fly
about 30 feet. That’s what they do in the Olympics. Is that flying?”
Why are we intelligent?
One theory about why the human
brain is exceptional is that it just has more neurons: the human brain has
roughly 100 billion of them, but elephants have close to 260 billion neurons… so
that’s not why.
Scientist have tried to figure out if the kind of neurons we have are
special. Human brains seem to have particular neurons that activate when we
learn from others’ behavior: Mirror Neurons. But scientists have found similar
neurons in the brains of other primates.
In a way many of our tests look for human qualities, using human
measures based on a human perception of the world. We’re just missing a lot of
the stuff that animals do that’s incredibly smart and clever, because we’re
using human intelligence as the standard.
SILVIA
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