Biological Approach Flashcards
The influence of genes on behaviour AO1
Genes control physical processes in the body
Twin studies:
-Monozygotic, 100% identical
-Dizygotic, 50% identical
Concordance rate
Genotype
Phenotype
Concordance rate
a statistical measure in terms of level of agreement between twins.
Genotype
The genetic constitution of the gene- their DNA. Genetic material given by the sperm and the egg of the parents
Phenotype
Physical characteristics as a consequence of their genetics and influence of the environment
Biological structures AO1
Nervous system is the bodies command centre
Brain areas:
-frontal lobe
-temporal lobe
-occipital lobe
-parietal lobe
Scans:
-PET scan
-MRI scan
-fMRI scan
-CAT scan
Phineas Gage case study- pole went through his frontal lobe— it regulates self control- he became aggressive
Frontal lobe
Voluntary movement and functions
Temporal lobe
Processing auditory information
Occipital lobe
Visual processing and perception
Parietal lobe
processes information about senses
Neurochemistry AO1
The action of chemicals in the brain- neurotransmitters transmit messages
Evolution AO1
-Change in the genetic composition over successive generations
-Darwin proposed the theory of natural selection
-if a mutation has been adaptive is has had a positive affect on the fitness of the offspring and future generations, aids a survival
Evaluating the biological approach AO3 strength
-led to useful, practical applications such as drug treatment
-highly scientific approach to human behaviour
Evaluating the biological approach AO3 weakness
-it can be difficult to establish a cause and effect relationship between biological factors and human behaviour
-fails to acknowledge the role of free will in human behaviour
