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Psych - Biological
The biological approach - key terms
Term | Definition |
---|---|
CNS | brain and spinal cord |
Genes | units of inheritance |
Genome | hereditary information |
Genome lag | evolution works slowly |
Genotype | genetic makeup of a person |
Phenotype | The observable differences between people that develops as their genotype interacts with their environment |
MZ twins | twins that share 100% DNA |
DZ twins | twins that share 50% DNA |
Chromosomes | Structures containing genetic material |
SRY genes | Gene responsible for initiation of male development process |
Testosterone | male sex hormone |
Hemisphere | one of two sides of the brain |
Localisation of function | Area of the brain responsible for specific behaviour e.g. the left is responsible for language |
Limbic system | A collection of structures in the mid-brain that processes memory and emotional information |
Neurotransmitters | Chemicals that send messages across neurons |
Hormones | Chemicals that are released into the bloodstream |
Evolution | The process of change through genetic mutations |
Lobes | Components of the brain (4 in total) |
Adaptive advantage | Any feature that increases the chance of survival |
Environment of evolutionary adaption | The conditions that existed during the period of evolutionary change |