Biological approach applied psychology

  • Created by: finleyyy
  • Created on: 11-02-20 09:35
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  • Biological Approach
    • Neurotransmitters- travel across neutrons as electrical currents. When in the synase, they're chemical.
      • Serotonin
        • Controls mood. Low levels are linked to depression.
      • Testosterone
        • Primarily found in higher quantities in men. Linked to aggression.
      • All-or-none - the neutron will either fire all or none at all.
      • Action potential- firing of a neutron caused by transfer of ion. When a neutron sends information down the axon away from the cell body.
      • Resting potential- What happens when a neutron is at rest
    • Explanations for abnormalities
      • Biological structures control all thoughts and feelings. So faulty biological structures.
      • All psychological behaviour is determined by physiology
      • Comparative method
        • Different species of animals have similar behaviour so can be compared to human behaviour.
        • However, humans are complex so this can't always be trusted
      • Physiology
        • Hormones, nervous system, and brain functions are responsible for behviour. Changes in these causes behavioual changes
      • Genes
        • Biological units that make us who we are. Genes are passed down. We inherit behaviour. They interact with environmental influences.
        • Genotype- genetic makeup, in alleles.
        • Phenotype- a result of genotype, appearance or observable trait.
      • Neurochemistry
        • Substances and activity in nervous system. neuron- elecical in pre synaptic, chemical in synapse, electic in post synaptic.
      • Genetic abnormalities lead to physiological abnormalities. They often lead to behvaioural changes. This supports the idea that physiological come before psychological.
    • Brain
      • Wernicke
        • Helps understand language. Not speech.
      • Broca
        • Helps accurately communicate through speech. Not comprehend.
      • Brain operates as a whole and controls all human behaviour.
        • Localisation of function- different parts of the brain control different things.
    • Aggression
      • Hostile
        • Motivated by frustration. Sudden, impulsive.
      • Instrumental
        • Intent to cause harm. Caluculated, planned out.
      • MAOa
        • Destroys leftover serotonin in the synapse. Low levels of MAOa means there will be leftove serotonin. A correlation has been found with this and aggression.
    • Gender
      • Sex
        • Genetic sex, biological
      • Gender
        • What they identify as
      • Females and males process the same neurochemicals but to different degrees and through sex-specific body-brain connections.
        • These differences could explain sex specific behaviour.
        • Serotonin- concentration. Boys find it harder to concentrate- lower levels.
      • Gender dysphoria
        • When someones gender identity is different to the biological sex.
        • Somatostatin- hormone that regulates the endocrine system. The level you have links to the gender you identify as- correlation.


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