Conceptual Issues Flashcards
Abnormality
Statistical rarity, deviance, distress, and dysfunction.
Abnormality - drastically rarity
Any deviation from the norm is abnormal (but this definition includes many positive characteristics that are rare eg. gifted musicians)
Abnormality - deviance
Behaviour is abnormal if socially unacceptable (but need to avoid oppressing non-conformist behaviours).
Abnormality - distress
Behaviour is abnormal if it causes significant distress to the individual (but some individuals are not distressed by their dysfunctional behaviour).
Abnormality - dysfunction
Behaviour is abnormal if it interferes with an individual’s functioning in life (but how functional an individual is depends on societal expectations).
Mental disorder
Defined as behaviours that may be statistically rare, distressing, unacceptable to society.
But also behaviours that stem from an underlying dysfunction or illness.
Historical background of biological perspective
Prior to the twentieth century ‘insanity’ was considered a single disease.
Emil Kraepelin challenged this single-disease concept of insanity.
Kraepelin classified behaviours according to their known causes (if known), or simply described behaviour of their causes were unknown.
Causation from the biological perspective
In the late 19th century the cause of a type of disorder (general paresis of the insane) characterised by hallucinations and delusion, was shown to be a biological disease (syphilis) - not quite true!
Further research demonstrated associations between certain syndromes and localised brain damage eg. Broca’s area
As a result of these findings, by the end of the 19th century the medical profession was confident in finding biological causes of mental illness.
Treatment from the biological perspective
Early biological treatments were not based on scientific evidence and as such were ineffectual (eg. cold baths, bleeding).
Early 20th century treatments included electroconvulsive therapy (ECT) and psychosurgery eg. lobotomy
Effective medications arrived in the 1950s.
Contemporary biological perspectives
Current theories focus on identifying the causes of mental disorders and have concentrated mainly on two areas:
Structural brain abnormalities as seen in people with schizophrenia and other disorders (eg. enlarged ventricles).
Neurochemical imbalances.
Contributions of the biological perspective
There has been significant advancement in the development of effective drug treatments for a wide range of disorders.
Today there is a better understanding of the role of brain structure and neurochemisty in the aetiology of mental disorders.
Limitations and criticisms of biological perspective
Much of the evidence for the biological causation of mental disorders is inclusive.
High rates of relapse after an individual stops taking medication.
Side effects of some medications have been underestimated.
Current biological perspectives assume a categorical approach to classification rather than a dimensional approach.
Psychoanalytic perspective
Developed by Sigmund Freud in the late 19th century.
Posits that much of the reason for human behaviour lies in the unconscious and is therefore not accessible to awareness.
Human behaviour involves a complex interaction between the id, ego, and superego.
Key concepts of psychoanalysis - the unconscious
The id: driven by instincts, mainly of sexual and aggressive nature.
Ego: conscious, realistic, aims to balance the desires of the id with reality.
Superego: seeks to uphold individual and societal moral standards.
Failure to manage conflict results in anxiety which is dealt with through defence mechanisms.
Classification and causation from psychoanalytic perspective
All behaviours are the result of conflict among the id, ego and superego (anxiety).
Defence mechanisms
Neuroses and psychoses
Neurosis
According to psychoanalytic theory, set of maladaptive symptoms caused by unconscious conflict and it’s associated anxiety.
Psychosis
State involving a loss of contact with reality in which the individual experiences symptoms such as delusions and hallucinations.
Treatment from psychological perspective
Dream analysis
Free association
Transference