Approaches in Psychology (Biological, Psychodynamic, Humanistic)- TB Flashcards
BI: What does heredity mean?
Passing of characteristics from one generation to the next through the genes- the reason that off-spring take after their parents
BI: What do genes do? (2 examples)
Carry instructions for a particular characteristic e.g. intelligence or temperament
BI: What is the nature-nurture debate?
The debate to which psychological characteristics are determined by genes or the environment
BI: What is a genotype?
The genetic code that is ‘written’ in the DNA of an individual’s cells
BI: What is a phenotype?
The physical appearance that results from inherited information from the genotype
BI: Why do individuals differ in terms of intelligence, ability etc.?
Because each individual has a unique combination of genetic instructions
BI: Where does the central nervous system (CNS) go?
Brain & spinal cord
BI: Where does the peripheral nervous system (PNS) go?
Somatic & autonamic nervous system
BI: What is the cerebrum?
85% of the brain, divided into 2 halves (hemispheres) which are divided into 4 (lobes)
Outer surface=Cerebral Cortex which is responsible for “higher order” functions e.g. thought & language
BI: What is a neurotransmitter?
A chemical at the end of a neuron, which travels from one neuron to the next across a synapse
BI: What are the 2 types of neurotransmitter?
1) Excitatory neurotransmitter
2) Inhibitory transmitter
BI: What does the excitatory neurotransmitter do? (example)
Triggers nerve impulses in the receiving neuron & stimulates the brain into action- e.g. Dopamine=motivation
BI: What does the inhibitory transmitter do? (example)
Inhibits nerve impulses in order to calm the brain & balance mood- e.g. Serotonin= stables mood
BI: What are hormones?
Chemical produced by endocrine glands making up the endocrine system
BI: What do hormones do?
Respond to a signal in the brain and are secreted into the bloodstream and travel to ‘target cells’ & exert their influence by stimulating receptors on the surface or inside cells- altering its activity
BI: What is the fundamental belief of the biological approach?
All behaviour can be explained in terms of the individuals biology including: genetic basis of behaviour, genotype & phenotype, biological structures, neurochemistry & evolution
BI: What 4 topics are involved in the biological approach?
1) Genes (heredity, G/Phenotype)
2) Biological structures (brain & nervous system)
3) Neurochemistry- (hormones & neurotransmitters)
4) Evolution (natural selection)
BI: What is an example of a hormone and research into it?
Testosterone- Carre et al (2006) found higher testosterone in ice hockey players at home, suggesting the hormone energised players to defend their home territory
BI: What are 3 strengths of the biological approach?
1) Scientific method- controlled variables- ↑ validity of biological validity due to control
2) Real world application- clear predictions of effect of neurotransmitters on behaviour- demonstrates value of biological approach
3) If predisposition is discovered, they can avoid situations that trigger it, or can develop coping skills
BI: How is scientific method a strength of the biological approach?
Highly controlled environment- research is replicable under the same conditions which ↑ Validity of biological approach
BI: How is real world application a strength of the biological approach?
Clear predictions of effects of neurotransmitters- used in research into the role of neurochemical imbalance in depression which led to development of effective drug treatments- demonstrating the value of the biological approach
BI: What are 3 criticisms of the biological approach?
1) It is Reductionist- believes complex behaviour can be broken down & doesn’t take other possible influences into account
2) Behaviours are passed on through genes & cultural practice- limited explanatory power- some patterns of human behaviour have purely cultural origins, not survival
3) Concerns about how it is used- Genetic screening & discrimination against those with a predisposition to criminality & convenient excuse for complicated behaviour (criminality)
BI: What 2 ways is being reductionist a criticism of the biological approach?
1) Believes complex behaviour can be broken down into the action of genes, neurochemicals & hormones (e.g. mental disorders)
2) Doesn’t take other possible influences into account (Cultural, cognitive & emotional)
BI: What 2 ways is behaviours being passed on through genes & cultural practice a criticism of the biological approach?
1) Limited explanatory power
2) Many patterns of human behaviour have purely cultural origins with no obvious survival value (e.g. China selective abortions of girls & preference of sons)
BI: What 2 ways are concerns of how genetic explanations of behaviour could be used a limitation of the biological approach?
1) Genetic screening & discrimination against those with a predisposition for criminality
2) Used as a convenient excuse for complicated behaviours (criminality)- link between genes & complex behaviour isn’t straightforward
PS: What is the fundamental belief of the psychodynamic approach?
Behaviour (including mental disorders) arises from unconscious (psychological) drives that operate in the mind
PS: What does the psychodynamic suggest about 1) Individuals, 2) Childhood & 3) Mental disorders
1) Individuals are constantly changing as they develop
2) Emphasises importance of early childhood experiences (shapes personality)
3) Mental disorders can only be resolved through accessing the unconscious part of the mind & bringing repressed memories into conscious awareness (=Psychoanalysis)
PS: What are 2 roles of the unconscious?
1) Drives behaviour- can reveal themselves in different ways e.g. ‘Freudian slips’ & neuroses
2) Painful memories may be repressed in the unconscious to protect us but that creates anxiety which manifests itself in behaviour as a mental disorder
PS: What are the 3 structures of personality?
1) ID
2) Ego
3) Superego
PS: What is the id?
Innate & impulsive. ‘Pleasure principle’ that is selfish 7 contains basic instincts such as hunger & sex that requires immediate gratification
PS: What is the ego?
Reality principle. Balances demands of the id & superego, compromising between impulsive & selfish id demands & moral conscience of the superego