The Biological Approach Of Human Behaviour Flashcards

1
Q

Assumptions

A

-individuals genotype nd phenotype will determine how we behave
-psychal factors such as hormones, nervous system nd inheritance of genes can all explain our behaviour

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2
Q

Feature one
THE INFLUENCE OF GENES ON BEHAVIOUR

A

-behavioural characteristics such as intelligence,personality nd mental illness=genetically inherited same as physical characteristics e.g eye colour= behaviour will run in fam
-e.g genetic explanation argue OCD due to inheritance of one or many maladaptive genes SERT
-the closer the genetic link to someone with ocd the greater risk person would inherit ocd
-genetic probability of sharing b measured by concordance rates
Higher concordance rate=stronger evidence for genetic basis b
Shown in twin studies monozygotic twins = 87%
Dizygotic twin=47%

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3
Q

Genotype nd phenotype

A

-Genotype= specific type of genes individual inherit from biological parents nd unique to them
Can give a predisposition to disorders
-phenotype=product of what happens when genotype interacts with environment

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4
Q

Feature two
THE INFLUENCE OF BIOLOGICAL STRUCTURE ON BEHAVIOUR

A

-biological structure is an organ such as brain,nervous sys or endocrine system
-brain= biological structure that influence b. Abnormalities in size shape or function in certain areas of brain can lead to certain behaviours
-e.g enlarged ventricles= inc likelihood of schrizoprenia or abnormal functioning of parahippocamapal gyrus

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5
Q

Feature 3
INFLUENCE OF NEUROCHEMISTRY ON B

A

-neurotransmitter is chemical messenger in brain in brain that passes info from one synapse to other to produce behaviour
-range of neurotransmitters in brain that communicate these messages when an imbalance can cause abnormal b
E.G
-Imbalance of neurotransmitters dopamine linked with development of schizophrenia
For example too much dopamine activity in central areas of brain been associated with symptoms of schizophrenia such as auditory hallucinations

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6
Q

Feature 4
EVALUATION AND BEHAVIOUR

A

-Charles Darwin crated a theory called natural selection
-theory suggests any genetically determined b that inc an individuals chances of survival nd reproduction will continue to be passed on to future generations e.g aggression trough genes
-individuals who posses certain beneficial traits will have inc chances of survival nd therefore pass on to offspring
-being aggressive in out ancestry been advantageous in terms of survival nd inc reproduction
-such as hunting food which would be attractive to a mate therefore b is naturally selected to pass on
-research one third or men have the “warrior “ gene which has been linked to aggressive behaviour

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7
Q

AO3 strength

A

P-practical application
E-principle of theory b caused by imbalance of neurotransmitters used to create treatments such as SSRI
E-effective in treating individual with disorders such as OCD nd depression by inc seratonin activity by blocking re uptake of seratonin leading to decreased anxiety
L-impo part of applied psych help treat ppl in real world

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8
Q

AO3 limitation

A

P-biological reductionism
E-app reduces complex human b down to simple basic units for e.g genes nd neurochemical such as imbalance of dopamine is linked to schizophrenia
E-neglects a holistic approach which would take into acc person culture nd social context
L-lack validity not allow us to understand in context

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