Chapter 4- Issues And Debates (paper 3) Flashcards
(209 cards)
What is the nature vs nurture debate?
Extent to which aspects of behaviour are a product of inherited or acquired characteristics
What is heredity?
Genetic transmission of mental and physical characteristics from one generation to another
What is environment (in terms of the nature nurture debate)?
Any influence in human behaviours that is non-genetic. This may range from pre-natal influences in the womb or cultural and historical influences at a societal level
What is the interactionist approach?
Idea that nature and nurture are linked to such an extent that it does not make sense to separate the two, instead researchers study how they interact and influence each other
Who is René Descartes?
Nativist
Argues that human characteristics and even some knowledge is innate- result of heredity
Who is John Locke?
Empiricist
Argued that the mind is a blank slate at birth upon which learning and experience writes: the result of environment- key influence in the behaviourist approach
What is the heritability coefficient?
Used to assess heredity from 0 to 1 , indicates the extent to which the characteristic has genetic basis. 1 suggesting it’s entirely genetically determined
How did Plomin contribute to heritability coefficient?
Highlighted the general figure for heritability in IQ is around 0.5 across multiple studies in a variety of populations. Therefore genetic and environment are important factors in intelligence
What is the nurture aspect of the nature nurture debate?
‘The environment’
Richard Lerner identified different levels of the environment
Eg:
Pre-natal terms like mother’s physical and psychological state during pregnancy
Post-natal such as social conditions child grows up in or cultural and historical context they are part of
What does relative importance of the nature nurture debate mean?
Changed, psychologists are more likely to ask what the relative contribution of each influence is in terms of what we think and what we do
Eg: twin studied is difficult to tell whether high concordance rates is a result of shared genetics or shared upbringing
How does the interactionist approach have relative importance?
Idea that nature creates/ leads to nurture as the heredity and environment interact eg:Belsky and Rovine demonstrated parent-child relationship is ‘two-way’/ reciprocal, the child’s innate temperament affecting the way parents respond. Their responses will affect the child’s behaviour
What is the relative importance and what is the diathesis stress model?
Suggests that psychopathology is caused by genetic vulnerability which is only expressed when there is an environmental trigger
Eg: Pikka Tienari et al found a group of Finnish adoptees were more likely to develop schizophrenia if biological relative had history of disorder (genetics) and the adoptive families were dysfunctional (trigger)
What is epigenetics? How does this have relative importance in the nature nurture debate?
The life experience of previous generations. Refer to changes in our genetic activity without changing our genetic code, happens through interaction with the environment eg: smoking, pollution,war… which leave ‘marks’ on our DNA which can influence genetic codes of our child/ future generations
What did Brain Dias and Kerry Ressler do?
Gave make lab mice electric shocks every time they were exposed to the smell of acetophenone (chemical in perfume) . As behaviourist demonstrated the mice showed fear every time the scent was presented. Furthermore, the rats children and grandchildren also feared the smell even though they had never been exposed acetophenone or electric shocks
Evaluation- strength- implications of nativism and empiricism
Empiricist suggest only behaviour can be changed by altering environmental conditions- so can shape behaviour
This has practical application as desirable behaviours can be reinforced and undesirable behaviours punished/ ignored
This can lead to model societies where it can manipulate its critizens using these techniques
Limitation- implications of nativism and empiricism
Extreme determinism- leads to controversy in attempts to link things like race, genetics, intelligence- socially sensitive
Also raises ethical questions eg: application of eugenics policies
Limitation- shared and unshared environments
Introduced by Dunn and Plomin that individual differences means the siblings experience life events differently eg: age or temperament means that things like parental divorce could impact/ have a different meaning to each sibling
This demonstrates that environment is complex and that even MZ twins reared together do not show perfect concordant rates. This supports the view that heredity and the environment can not be meaningfully separated
Limitation- constructivism
Suggested that people create their own ‘nurture’ by actively seeking environments that are appropriate for their ‘nature’ eg:a more aggressive child is likely to feel more comfortable around children who depict similar behaviour and will ‘choose) their environment accordingly- affects their development
Plomin refers to this as ‘niche- picking’ and ‘niche-building’. Negative as again more evidence that it is illogical to try and separate nature and nurture influences on child’s behaviour
Limitation- relationship to other debates
Too deterministic
A too strong commitment to either nature or nurture position corresponds to a belief in hard determinism
Nativist- ‘anatomy is destiny’ where as empiricists- environment is all. This equates to biological determine and environmental determine respectively
Just like constructivism is similar to ‘reciprocal determinism’ - makes them hard to distinguish
Limitation- genotype-environment interaction:
Scare and McCartney put forward a theory of gene-environment interaction that has 3 types
1) Passive interaction- parents’ genes influence the way they treat their children
2) Evocative Interaction- child’s genes influence and shape the environment in which they grow up
3) Active Interaction- child creates its own environment through the people and experience it selects
This points to a complex and multi-layered relationship between nature and nurture
Examples
Look in booklet for more detail
2 videos- criminal behaviour and acquisition of phobias
Video on twin studies and notes on ‘Three Identical Twins’
How do nature and nurture interact in attachment?
Nature- children’s innate temperament influences the parents response to the child (nurture), the parents response (nurture) is influenced by the Child’s behaviour and
expression of their temperament. (Nature)
What was TEDS? What was the sample size? Duration? Key individuals? Job roles?
Stands for Twins Early Development Study
Began 1994
Kings college London
Over 50,000 families with twins researched from birth to 20 years
Have over 21000 twins
Over 10,000 twin pairs born in England and Wales
Key researchers- Plomin (genetic influences) and Dunn (environmental influences)
Duration- 20 years, collect data from twins at least once every two years
Job roles- variety, wanted creativity but also experts in the subject, data manager, mailers, scientists
Led by over 140 researchers from 50 research institutions
More then 100 collaborators
What aspects of behaviour and development was studied at TEDS?
Potential and limitations
How environment affects us
Prevention, diagnostic and treatment of illnesses
Look at cognition, school achievement, home and school environment, health, well-being, personality, mental health