Biological Approach Flashcard
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a perspective that emphasises the importance of physical processes in the body
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biological approach
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brain, genes, neurochemistry and the nervous system
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4 main physical processes
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the midn lives in the brain so all processes have a physical basis
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main assumption
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they make up the chromosomes on consist of DNA which codes for the physical and psyhciological features of an organsim that are passed down between generations
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genes
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comparing co-ordinance rates in twin studies
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main way in which genetic basis of behaviour is studied
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identical (100% shared genes)
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monozygotic
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non-identical (50% shared genes)
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dizygotic
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an arrangement of parts to form an organ, system or living thing
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biological structures
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relating to chemicals in the brain that regulates psychological functioning
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neurochemistry
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the particular set of genes a person possesses
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genotype
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the characteristics of an individual determined by both their genes and environment
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phenotype
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much of human behaviour depends upon an interaction between inherited genes and the enivronment
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what do biological psychologists accept from the existence of genotype and phenotype
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the changes in inherited characteristics in a biological population over sucessive generations
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evolution
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any genetically determined behaviour that enhances our survival will be passed down to future generations due to reproductive sucess
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principle of natural selection
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use of precise, objective and highly scientific methods increasing reliability of the data
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main strength of this approach
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development of psychoactive drugs to treat mental illnesses due to increased understanding of the brain
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real life application
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drugs treat symptoms but do not tackle the cause so only an association exists
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issue with approach due to causal conclusions
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biological determinism means we have no free will
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main debate associated with this approach
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can't separate nature and nurture so confounding variable in twin studies lessening the validity
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issue from nature/nurture debate
