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Psychology (Biological approach ( (The brain (Neuroplasticity (The brain…

- - - - Genetics and behaviour
        
        Epigenetics
        
        Chemicals that are responsile for whether a gene is turned on or off
        
        Studying families (twin studies) are the best way to study genetic influence on human behaviour
        
        Drug addicition
        
        Phobias
        
        Alcoholism
        
        Anxiety
        
        OCD
    - - Hormones and behaviour
        
        Hormones are a class of signaling molecules that exist in all multi-cell organisms. Examples include testosterone, cortisol. The same chemical may behave differently depending on the person.
      - Pheromones and behaviour
        
        Pheromones are similar to hormones but work outside of the body, inducing activity like sexual arousal in other people.
        Insects use pheromones to communicate.
        
        Releaser, primer, signaler, modulator
    - - Localization
        
        Particular regions of the brain responsible for different things
        
        For example memory, language, emotion
      - Neuroplasticity
        
        The brain changes in response to physical development.
        
        Axonal sprouting - undamaged axons grow new nerve endings to reconnect neurons with injured links. They therefore form new neural pathways to accomplish needed functions.
        
        If one hemisphere is injured, the other is capable of taking over some of the injured one's functions.
      - Neurotransmitters
        
        Neurotransmitters influence behaviour on a chemical level. Even the slightest changes in brain chemistry usually result in noticeable changes in behaviour.
        
        Brain studies
        
        Electroencephalography, a technique for recording electrical activity in the brain, is a useful diagnostic aid in brain injuries, tumors, epilepsy, sleep disorders and other diseases of the nervous system.
        
        Magnetic resonance imaging is a test that uses powerful magnets, radio waves and a computer to make detailed pictures of the brain.