Unit 8 - Psychopathology Flashcards
What are 4 different definitions of abnormality?
deviation from social norms
statistical infrequency
failure to function adequately
deviation from ideal mental health
What is deviation from social norms?
a person’s thinking or behaviour is classified as abnormal if its different to the unwritten rules expected from a social group.
What is a strength of the definition of deviation from social norms?
gives a social dimension to the idea of abnormality, which offers an alternative to ‘sick in the head’ individual.
What are the weaknesses of the definition of deviation from social norms?
- social norms change from culture to culture. This means what is accepted as normal in one culture maybe different in another - cultural relativism
- norms change over time. Means behaviours have changed e.g homosexulatity now compared to 1980s.
What is statistical infrequency?
a person’s thinking or behaviour is considered abnormal if it is rare or statistically unusual e.g high IQ
What is a strength of the definition of statistical infrequency?
provides an objective way, based on data.
What are the weaknesses of the definition of statistical infrequency?
- doesn’t take into account desirability of behaviour, just its frequency.
- no definite cut-off point where normal behaviour becomes abnormal behaviour (on graph).
What is failure to function adequately?
refers to abnormality that prevents a person from carrying out a range of behaviours that society would expect from them e.g getting out of bed everyday
What is the criteria used for the diagnosis of failure to function adequately?
dysfunctional behaviour - behaviour which goes against the accepted standards of behaviour
observer discomfort - behaviour that causes other individuals to become uncomfortable
unpredictable behaviour - impulsive behaviour that seems to be uncontrollable
irrational behaviour - behaviour that’s unreasonable and illogical
personal distress - being affected by emotion to an excessive degree
What is a strength of the definition of failure to function adequately?
provides a checklist to check an individual against to see if they are abnormal
What are the weaknesses of the definition of failure to function adequately?
- might not be linked to abnormality but to other factors
- cultural relativism, what is inadequate for one culture might be different from another
What is deviation from ideal mental health?
An absence of any of the characteristics Jahoda created
What were the 6 criteria Jahoda created?
resistance to stress - having effective coping strategies and able to cope with everyday stress
growth, development or self-actualisation - experiencing personal growth
high self-esteem and strong sense of identity - having self-respect and positive self-concept
autonomy - being independent and being able to make personal decisions
accurate perception of reality - having an objective and realistic view of the world
What are the weaknesses of the definition of deviation from ideal mental health?
difficulty of meeting all criteria - very few people would be able so this suggest very few are psychologically healthy.
What is OCD?
is an anxiety disorder characterized by intrusive and uncontrollable thoughts (obsessions) , with a need to repeat actions (compulsions)
What are the cognitive characteristics of OCD?
obsessions dominant individuals thinking and are persistent.
What are the emotional characteristics of OCD?
obsessive thoughts often lead to anxiety, worry and distress
What are the behavioural characteristics of OCD?
compulsions lead to repetitive actions
How do psychologists try to classify mental disorders?
the DSM which contains mental health disorders and is used to classify disorders using diagnostic criteria. This includes a list of symptoms which can be used to make a diagnostic.
What are the 2 parts of OCD?
obsessions - is the cognitive part
compulsions - is the behavioural part
OCD has emotional part - obsessions tend to give people anxiety and compulsions attempt to relieve this
What are obsessions?
are intrusive and persistent thoughts, images and impulses.
What are compulsions?
are physical or mental repetitive actions
What are the 4 types of OCD behaviours?
checking
contamination
hoarding
symmetry and orderliness
What is the biological approach for OCD?
assumes that psychological disorders are physical illnesses with physical causes
What are the 3 biological explanations for OCD?
genetic factors
biochemical factors
neurological factors
What is the genetic factors explanation of OCD?
genetics is the study of genes and inheritance. OCD seems to be caused by a series of genes.
What is the study which relates to genetic factors of OCD?
Bille et al (1998) did a meta-analysis of twins studies. Found that for identical twins, if one twin had OCD then 68% of the time both twins had it. But if the twins weren’t identical there was only a 31% chance.
What are the two types of gene?
SERT (Serotonin transporter)
COMT (regulates the the function of dopamine)
How does SERT gene contribute to OCD?
Is mutated in people with OCD. Mutation causes an increase in transporter proteins at a neuron’s membrane. This leads to an increase in the reuptake of serotonin
How does COMT gene contribute to OCD?
also mutated with people with OCD. Mutations causes opposite effects of SERT gene, it causes a decrease in COMT activity and therefore higher levels of dopamine
What are the weakness of the genetic explanation?
- genes alone do not determine who will get OCD, just creates vulnerability. Shown by 68% of twins and not 100% this suggests OCD is due to genes and other factors.
- OCD may be culturally rather than genetically transmitted as family members observe and imitate each other’s behaviours.
What are the strengths of the genetic explanation?
supported - by Bille study
What is the neurological factors explanation of OCD?
refers to the regions of the brain, structures such are neurons and neurotransmitters involved in sending messages through the nervous system.
What is the PFC in the brain and its functions?
prefrontal cortex - involved in decision making and regulation of primitive areas of behaviour
What happens if the PFC is overactive?
causes an exaggerated control of primal impulses. If you have OCD your PFC is overactive which means obsessions and compulsions continue
How is unbalanced release of serotonin and dopamine related to OCD?
reduced serotonin and excess dopamine could cause OCD
serotonin regulates mood, OCD patients have low levels
dopamine influence concentration, OCD have high levels
What type of scan shows the biochemical factors and neurological factors?
PET
What did the PET scan find for neurological factor?
abnormality in the basal ganglia in the brain is linked to OCD