Human Intelligence

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Although it seems easily defined intelligence is a very broad subject. A vast amount of

meanings are given to intelligence as a concept from various cultures and sciences. Intelligence

can be classified in two ways one way is fluid intelligence and the other is crystalized

intelligence. Fluid intelligence is closely tied to biology as well as nature and is responsible for

our quick thinking abilities. An example of fluid intelligence would be thinking of an escape

route to flee a burning house or ripping the peel off a banana to eat it. While fluid intelligence

requires us to act upon our instinctual thoughts, crystallized intelligence is the opposite because

it is knowledge learned from our environment’s that has accumulated overtime such as the ability

to play a musical instrument.

Throughout history psychologists and sociologist have been trying to devise a way to

reveal the level of intellect that animals or humans possess. In contrast to humans, no raven can

compose music, no honeybee can speak in rhymes, and no manatee can solve equations with

two unknowns. Only humans can perform such intellectual tasks because we have the ability to

reflect back on our accumulated knowledge to help us achieve a goal or accomplish a task.

It is natural to assume that our superior ability in several areas of mental function

correlates to distinct characteristics of the human brain that are not found within other animals.

One of the key differences is the size of the human brain. While humans don’t have the largest

mammalian brain, we do have the largest brain mass relative to body mass. The development

of the human brain has developed at a most rapid pace than that of animals and perhaps is the

reason why our level of intelligence surpasses that of animals. It is obvious to presume that both

our fluid and crystallized intelligence are at a higher level of that than animals. What separates

humans from animals in the field of intelligence is our ability to reason, think and rationalize

how we feel emotionally.

Humans have the ability to incorporate and communicate how we feel to others by

describing our feelings. As far as we know, animals only act on instincts for example a zebra

lacks the communication skills to tell the lion to not eat it but acts on their instincts to run

away when they see a lion approaching. Research intelligence is essential in understanding the

complex aspects of human intelligence. Scientists for example have found that primates and

humans use the same styles to communicate such as hand signals, body gestures and verbal

communications.

Scientists have found the genome of the chimpanzee and found that humans are 96

percent similar to the great ape species meaning that our genetic build up is 96% similar to that

of a chimpanzee. Because chimpanzees are our closest living relatives, the chimpanzee genome

is the most useful key to understanding human intelligence and evolution. By comparing human

and chimpanzee genomes, the researchers have identified several sequences of genetic code that

differ between humans and chimps. One of these differences is our advancement in the brain and

its development for example humans have the ability to feel emotion this is due to our amygdala,

while our frontal lobe allows us to choose between the good and bad as well as allow us to

recognize future consequences resulting from our actions.

As the science of psychology has developed, one of the biggest questions proposed

concerned the nature of intelligence. Some of the definitions that have been given for

intelligence have been the ability to adjust to one’s environment. Is intelligence a product of

hereditary or is it a product of an individual's environment? What makes up our intelligence? Is

it our life experiences or our DNA? The nature versus nurture debate regarding intelligence is

one that has...
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