The Biological Approach
- Created by: Thunder1107
- Created on: 24-08-17 11:00
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- The Biological Approach
- Assumptions
- It investigates how neurobiology impacts behaviour
- Much of human behaviour has physiological causes which may be genetically or environmentally altered
- Genes affect behaviour and influence individual physiology differences between people
- They study the brain, central nervous system and hormones
- Heredity is the passing of characteristics
- Gene development depends on interaction with other genes and the environment
- Genotype: genetic code in the DNA Phenotype: observable characteristics from the genotype
- Influences on behaviour
- Biological structures
- The PNS consists of the ANS and SNS
- The NS consists of the brain and the spinal cord
- Our body consists of millions of cells and neurons which communicate
- Behaviour is caused by the NS consisting of the CNS and PNS
- Neuro-chemistry
- Neurotransmitters are chemicals that are produced in brain and NS
- They trigger neurons to send and impulse
- They stimulate the brain into action (excitory) Dopamine
- They calm the brain and inhibit nerve impulses (inhibitory) Serotonin
- Hormones
- They are chemicals produced by the endocrine gland
- Signals from the brain influence hormonal secretion into the blood stream
- They travel to target cells and stimulate receptors
- Their presence causes a physical response
- Evolutionary
- The genotype is changeable and can be changed by natural selection
- Charles Darwin emphasised natural selection and sexual selection
- Species with a particular trait provide them with an advantage and survive
- As we compete to access resources those who survive must reproduce
- Biological structures
- Assumptions
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