Abnormal Psychology - Heather Flashcards
Diathesis definition
An individual’s vulnerability toward having a particular abnormality or disease
Criteria for defining abnormal behaviour
- Personal distress - subjective experience of suffering
- Statistical rarity - has unusual behaviours (e.g. binge eating)
- Maladaptive behaviour - has impaired functioning (e.g. insomnia, poor reality testing)
- Violation of social norms - exhibits behaviour that is socially undesirable
- Danger to self or others - usually dangerous to self via poor judgement
Anhedonia definition
The condition of not being able to feel pleasure
Comorbidity definition
Meeting the diagnostic criteria for more than one disorder
Edwin Smith papyrus
Descriptions of treatment of wounds and surgical operations
Brain was described as the site of mental functions
Ebers papyrus
Treatment and magic to cure abnormal behaviour with no known cause - gave more detailed insight into psychopathology than edwin smith
Small section about psychiatry - separate from normal health. Described disorders relating to depression, concentration and emotions.
Indian scriptures that helped develop modern day psychology
Approx. 300 BC
Ramayana - gave clear explanations of depression and anxiety
Sharaka Samihaita - text on psychiatry e.g. personality disorders.
Historical perspectives of abnormal behaviour
Demonology (450-1000AD):
- Possession by evil spirits
- Exorcism
- May have been a conflict between the gods that causes abnormal behaviour (Greeks and Romans)
- Common in China, Babylon and Peru
- China used acupuncture to treat abnormal behaviours
Philosophy and Medicine (Hippocrates)
Father of modern medicine
Believed that mental disorders had natural causes - organic nature
Can be heredity, can have a disposition towards a disorder or could have had a head injury - beginnings of psychology being a medical model.
Hippocrates’ 3 categories of mental disorders
- Melancholia - depression
- Mania - bipolar/manic episodes
- Phrenitis - inflammation of the brain
4 humors
Blood (sanguis) - optimistic, cheerful, unafraid
Phlegm - consistant, relaxed, compassionate.
Bile (choler) - energetic, passionate, bad-tempered
Black bile (melancholia) - thoughtful, depressed, reflective.
World views on treating mental illness
Greek - music and dance
Chinese - acupuncture
Roman - massages
Galen
First to suggest that blood flows through arteries
Drove forward the medical model
First to talk about the anatomy and the nervous system
Functions of the brain were the foremost causes of mental illnesses.
Medieval times (456-1450 AD)
Possession was the most common belief of abnormal traits
Treatments were beating out the devil and exorcisms performed by the church
First mental hospital was opened in Bhagdad in AD 792
Avicenna
Islamic physician between 980-1037 AD
Wrote the canon of medicine
Born in Uzbekistan
Made huge contributions to hysteria, mania, melancholia and epilepsy
Avicenna - Prince of Persia
Prince of Persia thought he was a cow and was very malnourished because he wouldn’t eat. Avicenna used reverse psychology and said he was the butcher but couldn’t kill the cow as it was too skinny. The prince started eating again and the delusions stopped.
Mass madness
Mania and hysteria
Persecution of 100,000 people, mostly women who were though to be witches (15th-17th century)
Salem Witch Trials
Spiritually mad were thought to be witches
1962 in Massachusetts
Hanging of 19 men and women
Epidemic of small-pox arised at this time
Disorder was caused by the stress of the threat of the disease
European and American Asylums
A humanitarian approach was taken to asylum reforms
Paracelsus (1490-1541) looked at madness as a disease
He believed in astral influences on behaviour (e.g. horoscopes)
Biological model of psychopathology
- Medical model of psychology
- Organic causes
- Diseases like any physical disease
- Pathology underlies symptoms
- Wilhelm Greisinger (1817-1868), Emil Kraepelin (1856-1926)
- Study of syphilis advanced the idea of a biological basis to psychopathology
Biological basis of abnormal behaviour
- Psychopathology is the product of specific diseases
- A physical form of treatment will cure the problem e.g. ECT, drugs, hysterectomy
Achievements of the medical model of psychopathology
- Progressively more humane treatments based on illness concepts
- Mental health legislation
- Classification system made by Kraepelin in 11883 is similar to that for physical diseases
- Many technological advancements e.g. CT, MRI, PET and fMRI
Problems of the medical model of psychopathology
- Organic factors can’t explain all psychopathologies
- Abnormal behaviour can’t always be organised into discrete categories with biological explanations
- Medication has side effects
- Mental health legislation can be abused to limit the freedom of people with psychological problems
- Marginalises non-biological specialities
Look at models of psychopathology powerpoint for more
Psychodynamic model of psychopathology
- Sigmund Freud 1856-1939
- Psychopathology due to psychological forces that unconsciously influence the mind
- Behaviour is a result of conflicts between three psychic or mind structures (Id, Ego & Superego)
- Interplay between these forces is referred to as ‘psychodynamics’ which try to defend the individual against anxieties and depression through repression
Where are Id, Ego and Super ego located?
Conscious - none
Preconscious - Ego (tries to control Id impulses)
Unconscious - Super ego (integrated learned values) and Id (Innate instinctive needs)
What is Id?
- Present at birth
- Operates by ‘pleasure principle’ e.g. immediate satisfaction of basic needs, relief of tension
- A primary process e.g. thinking, images, fantasies; unconsciously driven
What is Ego?
- Primarily conscious in its mode of activity
- Reality orientated
- Mediates between immediate gratification need of Id and what can be achieved in reality
- Planning and decision making functions (secondary processes)
- Relies on Id for energy therefore always in position of conflict between needs of reality and needs of Id
What is Super ego
- Moral conscience
- Develops throughout childhood
- Grows out of the ego
- Polices conflicts between Id and ego
Defence mechanisms in the psychodynamic approach
- Psychodynamic conflict creates conscious or unconscious anxiety
- Anxiety is controlled by defence mechanisms (repression, projection, denial, displacement, sublimation)
- Role of ego and super ego often diminished by defence mechanisms
Achievements of psychodynamic approach
- Discovery and role of unconscious mechanisms
- Framework for understanding abnormal behaviour
- ‘Talking cure’ for mental health practices
- Importance of relationships at different stages of development
What is the conscious, preconscious and unconscious
Conscious - what we are constantly aware of
Preconscious - memories not in current awareness but we could if we focused on them e.g. phone number
Unconscious - largest part of the mind, brought to awareness only with difficulty. Holds our basic drives, impulses and instincts (mostly sexual)
Limitations of psychodynamic approach
- Untestable hypothesis and little evidence for effectiveness
- Infantile sexuality - no evidence, misconstrued in a social and cultural context
- Psychoanalysis is too long and expensive
- No longer part of mainstream clinical practice
Behaviourist model of psychopathology
- John Watson 1878-1958 and B F Skinner 1904-1990
- Followed from Pavlov’s work on conditioned reflexes
- Behaviour is not the symptom but the problem
- Certain abnormal behaviours can be learnt in childhood
Classical conditioning
conditioned stimulus –> unconditioned stimulus –> unconditioned response
bell –> food –> drool
bell –> drool/conditioned response
Operant conditioning
Behaviours increases with more positive reinforcement and diminish if followed by a punishment
Cognitive model of psychopathology
- Aaron Beck and Albert Ellis
- Meaning of events, more than the events themselves, that trigger anxiety
- Same event can evoke a different emotional response in different people
- Distorted thinking or schema
- Less pathological
- Many aspects of psychopathology are understandable errors of normal functioning
- Emphasis placed on the continuity between normal and abnormal anxiety or emotions
Distorted thinking in the cognitive approach to psychopathology
Cognitive distortions are errors of thinking
- Depressed people may have an overly negative view of the world
- Exaggerate the significance of negative events - evaluation
- Leads to maladaptive behaviour and emotional problems
Biopsychosocial perspective or psychopathology: integrative model
- Increased incidence of certain psychological disorders in poor, some age groups, some genders, ethnic minorities
- Interaction between genetics, environment and psychological factors
Stress-diathesis model (biopsychosocial perspective of psychopathology)
Diathesis:
- A vulnerability or predisposition to develop a certain disorder
- Relevant to a;; illness categories in physical and mental health domains
Stress:
- Anything that can be seen as a stressor
- Anything that exposes or exacerbates a vulnerable disposition
Genetic predisposition + environmental stressor = disorder
Interaction model of psychopathology
- Exposure to a stressor can trigger a disorder in a person with vulnerability
- A person can be protected from stressors that are likely to trigger a condition
- Those with vulnerability need less stress to elicit a disorder
- More susceptible to routine life stresses
- Greater diatheses, less of a stressor needed to provoke a disorder
Emil Kraepelin in classification
- First to publish a form of classification in 1883
- Studied the differences in dementia praecox and manic-depressive psychosis
What are the classification systems?
ICD:
- International classification of mental & behavioural disorders (WHO)
- Includes physical health issues
- Europe and worldwide
DSM:
- Diagnostic statistical manual
- Psychiatric disorders only
- USA
Comparison of ICD and DSM
- ICD has no axes
- 16 major categories in DSM-IV, 11 in ICD-10
- ICD-10 categories are more general
- Some categories e.g. sexual and gender identity appear in DSM-IV but not in ICD-10
Why do we need classification systems?
- Improves the reliability of psychiatric diagnoses, an everlasting problem in psychiatry (Whaley, 2001)
- Research and clinical purposes
- USA: insurance companies require DSM diagnoses for reimbursement
- Impose homogeneity, develop theories of causation
- Aid communication between professionals
What is the multi-axial system in the DSM?
- 5 dimensions or axes
- Involves biological, psychological and social factors
- Should enable a person-centred approach
- Should help plan treatment
- Should help predict outcome
What are the axes in the DSM?
Axis I: Clinical disorders, including major mental disorders, as well as developmental and learning disorders
Axis II: Underlying pervasive or personality conditions, as well as mental retardation
Axis III: Acute medical conditions and physical disorders
Axis IV: Psychosocial and environmental factors contributing to the disorder
Axis V: Global assessment of functioning or children’s global assessment scale for children under the age of 18 (on a scale from 100 to 0)
How is the DSM-5 different from previous editions?
Moved to a non-axial documentation of diagnosis (formerly axes I, II, III) with separate notations for important psychosocial and contextual factors (axis IV() and disability (axis V)