Biological Approach Flashcards
What are the 6 biological reasons to explain human behaviour?
Evolution
Brain
Neurochemistry
Nervous system
Endocrine system
Genetics
What is the definition of genetics?
The study of the genetic make-up of organisms and how genes influence physical and behavioural characteristics
What is the definition of phenotype?
Physical characteristics- influenced by environment- not fixed, can observe
Is behaviour learned from others around you?
NO
What is the definition of genotype?
The actual genetic makeup- fixed and unobservable
What is behaviour strongly influenced by?
Our genetic makeup and genetic inheritance
What are some examples of maladaptive behaviour?
Schizophrenia
Depression
OCD
Eating disorders
Extreme sports
What is Darwin’s theory?
All living things have evolved over time through natural selection
Maladaptive genes die out and adaptive genes survive.
Human behaviour has become wired in because of evolution
What approach does behaviourism and biological take: nature or nurture?
Behaviourism- everything is learnt (nurture)
Biological (nature)
What have humans evolved to smell?
Differences to give offspring the best immune system
What are universal behaviours?
Aggression- over things that would help us survive (land, food, water etc)
Facial expressions
What are the biological approach features?
1) humans and their behaviour has evolved
2) influenced by their genetic makeup and inheritance
3) uses biological structures to explain behavvooour
4) uses twin studies to study behaviour
Is MZ identical or non-identical?
MZ= identical
DZ= non-identical
What do family studies show?
They have the same environment and similar genetics- we cannot establish what is due to genetics
Why do we use twin studies?
We ideally use MZ twins (have the same genetics)- we can observe the environmental influence- the concordance rate
