Biological approach Flashcards
What is an assumption of the biological approach?
To fully understand behaviour we must look to biological structures and processes
Definition of neurochemistry
Relating to chemicals in the brain that regulate psychological functioning
What is a possible cause of mental illness?
An imbalance of neurochemicals in the brain
What is a possible cause of OCD?
Low levels of serotonin
What is a possible cause of schizophrenia?
Overproduction of dopamine
How can we investigate whether certain characteristics have genetic basis?
By doing twin studies
Definition of concordance rate
The extent to which twins share the same characteristic
What are monozygotic twins?
Twins that share 100% of their DNA
What are dizygotic twins?
Twins that share 50% of their DNA
Definition of genotype
Particular set of genes are person possesses
Definition of phenotype
Characteristics of an individual determined by genes and the environment
Definition of evolution
Changes in inherited characteristics in a biological population over generations
What is natural selection?
The theory that any genetically determined behaviour that enhances an individuals survival will continue in future generations
What is one strength of the biological approach?
Real-world application:
- Understanding neurochemical processes helps to treat serious mental disorders
- People with depression can better manage their condition
What is one strength of the biological approach?
Scientific methods:
- Uses precise and highly objective methods
- Can accurately measure physiological and neural processes without bias
