Week 1 Chapter 2 Current Paradigms Summary CF Flashcards
To provide a quick revision of Chapter 2
What questions does the genetic paradigm focus on?
The genetic paradigm focuses on questions such as whether certain disorders are heritable &, if so, what is actually inherited
What is heritability?
Heritability is a population statistic, not a metric (individual) of the likelihood a particular person will inherit a disorder
How can environmental effects be classified?
Environmental effects can be classified as shared and non-shared. Non-shared are sometimes called unique
What does the study of molecular genetics seek to identify?
The study of molecular genetics seek to identify differences in the sequence & structure of genes as well as gene polymorphisms, such as SNP’s that may be involved in psychopathology
What has genetic research emphasised?
Research has emphasised the importance of gene-environment interactions
What is meant by the concept of ‘genes via environment’?
- The genes do their work via the environment in most cases
- e.g.s of genetic influence being manifested only under certain environmental conditions include poverty - IQ and early maltreatment - depression
- Thus we must not look just for the genes associated with mental illness but also for the conditions under which these genes must be expressed
What is the neuroscience paradigm concerned with?
The neuroscience paradigm is concerned with the ways in which the brain contributes to psychopathology
Which neurotransmitters have been implicated in psychological disorders?
Neurotransmitters such as serotonin, norepinephrine, dopamine, and GABA have been implicated in a number of disorders
A number of brain areas have also been implicated in psychological disorders, name them.
- the autonomic nervous system - the sympathetic & para-sympathetic nervous systems
- the HPA axis - which is responsible for the bosy’s response to stress
What are the main biological treatments for different disorders and, what is the main limitation with them?
- Biological treatments, primarily medications, are effective in treating many disorders
- However, they are not necessarily treating the cause of the problems
Why must we be careful of reductionism?
Although the brain plays an important role in our understanding of the causes of psychopathology, the brain cannot be taken in isolation from factors of the external environment, as this over-simplifiers complex interactions.
What 5 structures are contained within the limbic system?
- hypothalamus
- anterior cingulate
- septal area
- hippocampus
- amygdala
What does
a, the white matter in the brain consist of &
b, the grey matter in the brain consist of?
- The white matter consists of the tracts of myelinated fibres that connect cells
- The grey matter consists of the brains cells or neurons
What are 2 of the neurotransmitters studied in psychopathology and what are their functions?
- Norepinephrine and GABA
- Norepinephrine can produce states of high arousal
- GABA inhibits nerve impulses
What 3 structures are contained within the HPA Axis?
- Hypothalamus
- Pituitary Gland
- Adrenal cortex