Biological approach

BIOLOGICAL basic assumption
suggests that everything psychological is at first biological, so to fully understand human behaviour we msut look to biological structures and processes
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BIOLOGICAL basic assumption
behavious and thought processes have an innate, biological basis
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BIOLOGICAL basic assumption
all human behaviour is due to our genetic makeup, brain structures or chemical processes
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BIOLOGICAL basic assumption
human genes have evolved to adapt behaviour to the environment
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Identical twins...?
share 100% same DNA, the egg splits in half
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Non-identical twins...?
share 50% same DNA
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What is a genotype?
the particular set of gened that a person posesses
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What is a phenotype?
the observable characteristics shown by an individual that are a result of both genes and/or environmental differences.
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What is natural selection?
Genetic mutations that cause random physical and behaviour changes in species. The strongest genes survive and are passed on.
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behavious and thought processes have an innate, biological basis

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BIOLOGICAL basic assumption

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BIOLOGICAL basic assumption

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Identical twins...?

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