Clinical and forensic psychology (year two) Flashcards
give the medical defintion of abnormality
abnormal is something that worsens health and well-being
give the statistical definition of abnormality
abnormal is something that is unusual in the population
give the social definition of abnormality
abnormal is something that is disapproved in specific times and places, something that needs to be changed
Explain why mental distress is not the same as medical illness
SYMPTOMS
- Subjective/ Functional diagnosis
- What the individual feels/observes
- Often cannot be objectively verified by tests
- In mental “illness”, there are only symptoms
SIGNS
- Objective/Organic diagnosis
- What the doctor/medical professional observes after biomedical testing (scans, blood tests, etc)
- In mental distress, signs
Give arguments for and against the biomedical model for depression being genetic
FOR: Twin-based heritability around 37% (Sullivan et al, 2000, Genetic epidemiology of major depression: review and meta-analysis. Am J Psychiatry 157, 1552–1562). Replicated studies with similar heritability estimates cannot be brushed away by methodological criticism
AGAINST: Problems with Equal Environment Assumptions (EEA) and twin-study methodology.
FOR: Studies have found short variants of serotonin transporter gene 5-HTTLPR in depression- serotonin influences mood, and this gene variant may lead to less serotonin uptake- low mood
AGAINST: Many of these studies poorly conducted, small sample sizes, findings not replicated, publication biases, big pharma involvement (See also Van Der Auwera et al 2019 failing to find GXE in depression).
Explain how co-morbidity causes issues for the biomedical model
Are forms of distress really separate entities? For example, co-morbidity for anxiety and depression - 70% (Carter et al., 2001). Anxiety and depression are also characteristics of MANY other forms of distress too.
If there is large amount of overlap, makes no sense to view distress categories as distinctively separate biological disorders
Also, sufferers that have the same label have heterogeneous symptoms- people with the same diagnosis can have VERY different experiences
Describe the work of Emil Kraepelin
German psychiatrist
ideas firmly rooted in the German experimental psychology tradition
was one of the founding people in devising a systematic classification system for mental disorders.
Kraepelin believed that mental distress has it’s origin in the malfunctioning of the brain, and that observable symptoms can reveal the underlying mental disorder (a bit like the DSM system does today).
Kraepelin used a scientific, systematic approach, and collected over 1000 case studies (many of his own patients), and used them to test and refine his classification system. T
he existence of large captive populations in mental asylums enabled the establishment of a new professional discipline, psychiatry, as part of a medical profession
Define aetiology
Study of factors that cause mental distress
Can happen anytime before conception (epigenetics), prenatally during pregnancy, during birth and at any time during life
Should also learn HOW mechanisms function
Define necessary cause
Necessary cause: Y never occurs without the prior occurrence of X (but X can also occur without leading to Y)
Define insufficient cause
Insufficient cause: Y occurs only after X occurs with another variable, Z. Y does not occur when X occurs alone
Every factor is bidirectional
Give some difficulties in studying causality
Most studies are retrospective studies
Many studies are cross-sectional (rather than longitudinal)
Large number of variables, complicated relationships
Important influences difficult to manipulate experimentally
Sensitive variables hard to investigate
Participants may have difficulties in identifying/expressing feelings
Variables can be mediated by meaning – difficult to study
Lack of validity of diagnostic categories
Define epidemiology
The study of determinants and distribution of health-related topics
Define deductive and inductive approaches
Deductive approach: test a theory of causality using pre-determined variables (e.g surveys, experiments)
Inductive approach: explore experiences, and link them to causal theories or devise new causal theories (case studies, interviews, focus groups etc)
Give some advantages and disadvantages of case studies
Advantages
Good for rare occurrences
Can be useful for generating new ideas
Give some meaning to complex quantitative findings
Disadvantages
Impossible to generalise to whole population
Give some advantages and disadvantages of qualitative studies
Advantages
Brings new meaning to experiences
Can generate new hypotheses for quant studies
Can establish some causality
Disadvantages
Can’t be generalised to whole population
give some advantages and disadvantages of surveys
Advantages
Potential to have large, ecologically valid samples
Disadvantages
Reliance on self-reports
Often cross-sectional samples
Can have biased sampling
Based on potentially unreliable measures
Give some advantages and disadvantages of experiments
Advantages
May have some control over causality
Control over variables
Disadvantages
May not be possible to manipulate relevant variables
Low ecological validity
Samples may not be representative
Based on potentially unreliable measures
Give some issues of the biomedical model
We can’t measure serotonin; studies use different proxies, e.g how fast serotonin is synthesized in the brain (impossible to measure activity, synthesized rapidly and constantly)
No objective signs
We don’t know the function of mechanisms of serotonin in the brain
60+ years of research and millions of publications still cannot discover mechanisms
Describe research issues with the biomedical model
Guardian (2019): Systematic review, “The drugs do work: antidepressants are effective, study shows”
Authors and affiliations: lots of pharmaceutical interaction, by funding or by studies being run by people who are employed by pharmaceutical companies
Blind randomised controlled trials: not actually blind: antidepressants have other side effects, e.g nausea, lethargy, anhedonia, apathy – results in a reporting bias
Short-term studies: average duration is 6 weeks (myth about antidepressants kicking in within 2 weeks of use) – not a long enough time to measure, would be more beneficial to look after a long period of time e.g a year
Different antidepressants increase and decrease serotonin have the same effect : both act as same placebo
Any differences are meaningless in peoples life : Hamilton’s scale, 50 items and can score between 0 and 100 and a MDD cut off. A statistically significant score is meaningless to peoples lives when comparing before antidepressants and after antidepressants (scoring 2 points lower after taking SSRIs would be classed as significant, but that could make very little difference to a persons life
Eleanor longden : the voices in my head
Give some historical approaches to classification
- Kraepelin: attempted to reclassify mental conditions into dementia praecox contrasted with depression
- Group of schizophrenia’s encompassed dementia praecox
- Kraepelin’s approach assumes that symptoms covary and area part of a syndrome with common aetiology and course
Describe the ICD-10 and DSM5
- ICD-10
o Technically universal standard classification
o Recommended for admin/epidemiology purposes
o Forms basis UK NHS procedures - DSM-5
o APA
o Widely used in USA
o Recommended for epidemiology/statistical/research purposes
o Standard for researchers
Give arguments for the reliability of mental health diagnosis
- In the 1930’s and 1940’s a significant difference was observed between the schizophrenia diagnosis rates in the United Kingdom and the United States (Bellack, 1958).
- Comparison of the frequency and circumstances of schizophrenia diagnoses in Europe and America, suggested that the term ‘schizophrenia’ was being used in different ways in different places.
- The statistical reliability of the diagnosis of schizophrenia was found to be poor (kappa = 0.6, Spitzer & Fliess, 1974)
o Only 32% of the disagreement being due to poor measurement of symptoms
o 63% due to unclear criteria (Beck, Ward, Mendelson, Mock, & Erbaugh, 1962). - Kreitman (1961) suggested five different sources of error in diagnosis that could lead to unreliable diagnosis:
- The psychiatrists (the raters or diagnosers) might differ,
- the psychiatric examination might be different each time
- the patients might differ (they might mention different things, behave differently or even that their problems might have changed over time),
- the method of analysis might alter (there might be different rules for combining symptoms) and
- there could be different systems of names and styles of reporting.
Give arguments for the validity of diagnosis
- Diagnostic classifications should also be valid - scientifically meaningful and representing real ‘things’.
- Outcome (prognosis) for people with a diagnosis of schizophrenia, for example, is extremely variable (Bleuler, 1978; Ciompi, 1984) and attempts to define a diagnostic group with a more predictable outcome have not been very successful (Boyle, 1990).
- Diagnoses should also indicate what treatments will be effective.
o However, it appears that it is difficult to predict what treatment people will receive even on the basis of the diagnosis they receive (Heather, 1976).
o Bannister and colleagues (1964) found that in fact treatments often appear to be given for reasons other than the diagnosis.
o Responses to medication for “schizophrenia” and “bipolar disorder” vary. Medication response is irrespective of diagnosis (Moncrieff, 1997).
Describe research findings of race and culture in diagnosis
- Considerable evidence that Black people in UK are more likely to be diagnosed as having mental illnesses and to be detained in secure hospitals (Commander et al, 1997)than Asian and White people.
- People from ethnic minority groups tend to receive more medical and physical treatments, and are under-represented in less coercieve forms of treatment, such as counselling and psychotherapy services (Ahmed, 1995; Littlewood and Lipsedge, 1997
Describe research findings of diversity and difference on diagnosis
- Some individuals have strange experiences (visions, auditory hallucinations, or profound spiritual experiences) but see them as spiritually enriching, not illness (Jackson & Fulford, 1997).
- Huge diversity in what is considered an appropriate expression of distress in different cultures.
o Cochrane & Sashidharan (1995) - diagnostic systems can label behaviours as problems because they differ from what is normal in white, western, male, middle-class culture. In some cultures behaviours and experiences are common which are considered very abnormal in others.
Define predictive validity
- Diagnosis does not predict the course or outcome of psychotic illnesses
- .Diagnosis does not predict response to medication (Kendell, 1988).
Give some practical consequences of diagnosis
- Avoidance – people want to create social distance (Mehta & farina, 1997)
- Harsh treatment – Mehta & Farina (1997) people gave more electric shocks to those with problems understood as being due to mental illness compared to childhood events.
- Unemployment & Social Disadvantage - Less likely to get jobs (Farina & Felner, 1983) Excluded from some professions & life insurance etc.
- Loss of rights - Forced treatment Exclusion from driving / jury service
Give some psychological effects of diagnosis
- Hopelessness and decreased confidence
- Identifying with label of ‘mental patient’ (self fulfilling prophecy)
- Disempowerment
- Decreased ownership of experiences
- Denial of the meaning of experiences and relevance to current environment
- Denial of positive aspects of experiences
Give some professional implications of diagnosis
- Gives a misleading impression of certainty – syndromes and labels become real entities
- Promotes ‘us’ and ‘them’ thinking
- Narrow understanding of people’s problems
- Does not see people as able to change
- Places problem within individual rather than environment
- Fosters dependency in patients
- Narrows conceptualisations of treatment and treatment effectiveness
- Narrows the focus of research (it is about diagnosis rather than need, vulnerability and risk)
Explain case formulation and the process of developing a case
- “The case formulation is a hypothesis about the nature of psychological difficulty underlying the problems on the patients’ problem list” (J. Persons 1989)
- The way in which you understand the problem.
- Application of the applied scientist approach
o 1) Collect information that will help understand the client’s difficulties and highlight areas in which change may be possible (develop a hypothesis).
o 2) Assess the level of severity of the problems in order to assess the impact of any interventions. This will allow you to test your hypotheses regarding the nature of the problem. i.e.. measure change
o 3) To inform the client about the psychological approach(es) to be used in therapy.
Explain how psychiatric labelling can contribute to stigma
Language from biomedical model means difficulties seen as problems within an individual
o Pathologizes normal responses
o Contributes to power imbalance between client and clinician
- Labelling MH as illness is associated with predictions of dangerousness, unpredictability and fear and desire for social distance (Read et al., 2006)
Explain how race bias comes into play in psychiatry
Fernando 1991: Psychiatry is ethnocentric
- Garb 1997: AA/Hispanic patients more likely to receive a diagnosis of schizophrenia than white patients
- Neighbors et al 2003: white psychiatry inpatients are more likely than AA to be diagnosed with bipolar disorder
- NHS Digital 2018: Black people four times more likely to be detained under the mental health act
. Explain how gender bias affects psychiatry
DSM-5, 2000: 75% of people diagnosed with BPD are AFAB
- Ball and Links, 2009: Evidence of causal relationship between childhood trauma and later diagnosis of BPD (particularly sexual trauma)
- Some researchers have therefore argued that instead of seeing women’s distress as symptoms of a ‘borderline personality disorder’ we should understand their difficulties as a response to societal sexual violence and oppression (e.g. Shaw & Proctor, 2005)
Explain how comorbidity is an issue in psychiatry
Usual rather than unusual - more than 50% of people diagnosed with a mental disorder in a given year meet criteria for multiple disorders (Kessler et al., 2005)
- 23% of sample of psychiatric patients have three or more diagnoses (National Comorbidity Survey)
- Problem of comorbidity raises significant questions about the underlying structure & assumptions of classification (Hyman, 2010)
. Explain research findings of heterogeneity in psychiatry
- Heterogeneity: consisting of lots of different parts or elements
- Using specifiers and extra criteria increases heterogeneity
- 80,000 symptom combinations for PTSD diagnosis in DSM-IV compared with 600,000 combinations in DSM-5 (Galatzer-Levy & Bryant, 2013)
- Allsopp et al (2019): Explored the heterogeneity of mental health difficulties & experiences, and how diagnostic systems attempt to cope with this
- Timescales – e.g. discrete episodes vs. minimum time requirements
- Comparators – some experiences compared with ‘normal’ functioning (e.g. low mood) vs. others implicitly seen as inherently disordered (e.g. paranoia, hearing voices)
- Role of trauma only acknowledged in specific categories e.g. PTSD
Define homogeneity
Heterogeneity: consisting of lots of different parts or elements
- Using specifiers and extra criteria increases heterogeneity
- 80,000 symptom combinations for PTSD diagnosis in DSM-IV compared with 600,000 combinations in DSM-5 (Galatzer-Levy & Bryant, 2013)
- Allsopp et al (2019): Explored the heterogeneity of mental health difficulties & experiences, and how diagnostic systems attempt to cope with this
- Timescales – e.g. discrete episodes vs. minimum time requirements
- Comparators – some experiences compared with ‘normal’ functioning (e.g. low mood) vs. others implicitly seen as inherently disordered (e.g. paranoia, hearing voices)
- Role of trauma only acknowledged in specific categories e.g. PTSD
- Homogeneity: consisting of parts or elements that are all the same.
Give research findings into adverse or traumatic life experiences
The majority of people using mental health services have been exposed to adverse or traumatic life experiences (Mauritz et al., 2013)
- Multiple meta-analyses have demonstrated a robust association between traumatic experiences and mental health difficulties including:
o Depression (Mandelli et al, 2015; Nelson et al., 2017)
o Anxiety (Lindert et al., 2013)
o Obsessive compulsive disorder (OCD) (Miller & Brock, 2017)
o Suicidal behaviour (Zatti et al., 2017)
o Self-harm (Liu et al., 2016)
o Psychosis (Varese et al., 2012)
o Bipolar disorder (Palmier-Claus et al., 2016)
- Preventing childhood trauma would reduce cases of psychosis by a third (Varese et al, 2012)
- Typical psychological therapies are not as effective for people who have had traumatic life experiences:
o increased risk of recurrent and persistent depression (Nanni et al)
o a lack of response/remission during depression treatment (Nanni et al)
o twice as likely to develop chronic or treatment-resistant depression (Nelson et al., 2017)
Explain alternatives to diagnosis for accessing treatment
Using ICD psychosocial codes (Allsopp & Kinderman, 2017)
o neglect, abandonment, other maltreatment (Y06 and Y07)
o homelessness, poverty, discrimination, and negative life events in childhood, including trauma (Z55-Z65)
- ICD code analysis in mental health services (Kinderman et al., under review)
o Diagnosis only used in 21.5% of patient records (N=21,701)
o Codes for possible social determinants were used on only 43 occasions, <1% of almost 5000 people who were given a diagnosis
- GP records showed 1.8% of a sample of 11m had officially confirmed childhood maltreatment (Chandan et al., 2019)
o Those who had been maltreated were over 2x more likely to develop a mental health problem
- Organise services based on need & the severity/ complexity of distress
- Use a ‘complaints- or problem-based approach’: Descriptions without implication of “a disorder” (e.g. ICD codes; Kinderman & Allsopp, 2018)
- The Power Threat Meaning Framework
- Trans-diagnostic approaches
- Psychological formulation
Give some characteristics of BPD
- Borderline personality disorder: Characterised by impulsivity, unstable/intense relationships, suicidal/self-harm behaviour, marked reactivity of mood
Describe the three clusters of personality disorders
- Three clusters of personality disorders:
o A: Odd/eccentric (paranoid, schizoid, schizotypal)
o B: Dramatic/erratic (Antisocial, borderline, histrionic, narcissistic)
o C: Anxious/fearful (Avoidant, dependent, obsessive-compulsive)
Give come contentious issues associated with diagnosing personality disorders
- Personality disorders very closely associated with childhood abuse
- Diagnosis is: disempowering, ignores trauma/blame, locates blame in a ‘disorder’
o Also misogynistic
Give an overview of the dark triad
In the DSM system- Narcissistic Personality Disorder (NPD); Anti-Social Personality Disorder (ASPD)
Diagnostic systems rely on arbitrary cut-off points between “normal” and “abnormal” personality
In personality literature, this variation is considered as normal
From evolutionary perspective, different levels of these traits could be adaptive (e.g., fast life history; short-term mating strategy)
Give some of the domains of the psychopathy checklist-revised
Superficial charm
- Grandiose sense of self-worth
- Easily bored
- Pathological lying
- Manipulative
- Lack of remorse or guilt
- No emotional depth
- Callous
- Parasitic lifestyle
- Poor behavioural control
- Early behaviour problems
- No long-term planning
- Impulsive
- Irresponsible
- External locus
- Frequent marital failures
- Delinquent as a juvenile
- Re-offending criminal
- Promiscuous sexual behaviour
- Versatile as a criminal
Give physiological theories of depression
monoamine hypothesis: norepinephrine, dopamine & serotonin disturbances are responsible for depression. These are important for sleep, appetite & emotion. Most antidepressants increase levels of these. Evidence is still equivocal after 20 years.
More recently, an imbalance between monoamines & acetylcholine has been suggested as the cause (Janowski et al, 1983). Also, an increase in cholinergic activity due to stress is thought to effect the incentive function of the brain’s reward system by reducing sensitivity (Willner, 1985).
Describe psychodynamic and behavioural theories of depression
Psychodynamic
‘Frozen anger’ directed at self following some real/imagined loss.
Behavioural
Lewinsohn (1974)~ a low rate of response contingent positive reinforcement is the causal & maintaining factor in depression. Also linked with inadequate social reinforcement. Evidence is mainly correlational.
Seligman (1975)~ learned helplessness model developed to account for deficits in dogs exposed to uncontrollable shocks. Assumes that a person learns that outcomes are independent of their response and thus uncontrollable.
- Inadequate or insufficient reinforcement Lazarus (1968)
Depression can result from a lack of reinforcement
Unclear whether reduced frequency or quality of reinforcement is the important factor
- Reduced frequency of social reinforcement; Lewinsohn (1975)
People drop reinforcing activities due to extinction by a low rate of response contingent positive reinforcement (they can’t make good things happen)
- Loss of reinforcible behaviour (Ferster, 1973)
Depressed person does not receive reinforcement because they do not have the responses which would elicit it.
Loss of reinforcer effectiveness (Costello, 1972)
Although same behaviours and consequences occur, they have lost their reinforcement potency.
Could be due to changes in biochemical mechanism underlying motivation, or
Breakdown in behavioural chain due to loss of 1 reinforcer (eg. Rewards are dependent upon one central component such as work).
describe beck’s cognitive model
It is not a situation in and of itself that determines what people feel but how they construe a situation (Beck, 1964; Ellis, 1962)
Early life experiences
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Core beliefs
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Conditional assumptions/rules for living
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Activating event
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Negative Automatic Thought
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Symptoms of Depression (emotional, physical, behavioural)
Suggests that vulnerability to depression arises from certain kinds of schemas/ beliefs that a person holds about themselves, the world or others, and the future (negative cognitive triad)
When a core belief is activated we interpret situations through the lens of this belief even though the interpretation may not be valid
Common core beliefs
The self
“I’m incompetent”
“I’m worthless”
Other people
“No nobody loves/cares for me”
“Others always let you down in the end”
The world
“The world is a cruel place, there is no point trying”
“The world is full of pain, life is about suffering”
Describe and give examples of cognitive bias
Identifying automatic thoughts allows you to evaluate their validity
See Unhelpful Thinking Styles handout
All or nothing
Over-generalizations
Mental filter disqualifying the positives
Jumping to conclusions
Magnifying & minimising
Emotional reasoning
Labeling
Personalisation
Should, must, ought to
Describe different approaches to mental health across cultures
Post-(European) enlightenment ideas (17-18th C) led to development of:
Western Psychiatry focused on ‘abnormal’ mind mental illness & medical therapies
Western Psychology focused on ‘normal’ mind ’scientific’ psychological therapies
Non-western medical systems mainly holistic and often embedded in philosophy, religion etc. Examples:
Ayurveda in Indian sub-continent
Chinese traditional medicine
Traditional healing
Faith healing
Give some cultural factors which influence illness, duration and illness behaviour
Religious practices
Traditional medicines
Provision and resources– poverty – emigration
Stigma
Many more! i.e. Politics, human rights laws, science, etc
Describe how religious practices can influence attitudes towards MH and illness
Understanding causation – withcraft, curses, spiritual influences
i.e. Campbell et al. (2017): Looked at the content of delusions in a sample
of South African Xhosa people with schizophrenia. 72.5% believed others had bewitched them
- Acceptance of treatment - fasting, praying
- Content of delusions or paranoia
“Most are religious with much emphasis on prayer. Ethiopians are not serious about depression or sophisticated sickness. We believe in religion and holy water as a cure” (Palmer, 2007)
describe the role of traditional medicines
Describe the role of tradition medicines
More accessible- location, language
Cheaper
Added spiritual influence on treatment- make treatment more effective and faster?
More accepting of theory of causation
Describe the use of traditional complementary and alternative medicine in the UK
Evidence is varied
Systematic review conducted by Posadzki et al (2012) showed:
Most surveys were of poor methodological quality.
The average prevalence of use of CAM was 20.6% (range 12.1–32%).
The average referral rate to CAM was 39% (range 24.6–86%)
CAM was recommended by 46% of physicians (range 38–55%).
Self-report survey conducted by Sharp et al. (2018) showed:
16% of respondents had seen a CAM practitioner in the last 12 months
Describe how education can influence attitudes towards MH
Impacts views towards mental illness
Literate individuals are more likely to exhibit positive feelings towards individuals with mental disorders
Can also impact help seeking behavior and treatment choice
Formal vs. Informal education
“the people from the developing countries… many people cannot realize it (…) for some people, they have very limited education or knowledge, they won’t see the seriousness of the mental illness.”
(Donnelly et al., 2011)
Describe how stigma can affect attitudes towards MH
- Ostracised from community
- Impacts employment/business
- Impacts housing
- Impacts ‘marriageability’ of patient and family members
- Self-stigma?
Describe critical perspectives in a cross-cultural view of mental illness
Surveys and check-lists are practical and low-cost, but ‘the fatal error of community studies was to define all symptoms as pathological without considering the context in which they arose and persisted’ (Horwitz and Wakefield, 2007, p. 129).
By shifting focus away from context, reported rates of disorders, such as depression, are inflated, meaning that ‘the extraordinarily high rates of untreated mental disorder reported by community studies are largely a product of survey methodologies that inherently overstate the number of people with a mental disorder’ (Horwitz and Wakefield, 2006).
Such tools enable a “massive pathologization of normal sadness” that has made “depressive diagnosis less rather than more scientifically valid” (2007:103).
Describe some issues with cross-cultural research
- Category Fallacy
“the reification of a nosological category developed for a particular cultural group that is applied to members of another culture for whom it lacks coherence” (Kleinman, 1987).
- Potential biases
- Others including traditional practices, communication, service provision, illness behavior, etc.
Describe findings on experiences of distress
OVERVIEW OF SOURCES OF DISTRESS:
Poverty and a ‘broken economy’
Housing and ‘homelessness’
‘More important than exams, if you don’t have a place of your own to live in what good is school?’
Domestic violence and marginalisation
Ill-health (physical and emotional) i.e. Jighar Khun (liver-blood; regret, depression)
Educational provision
Governance and social justice
Explain operant/instrumental conditioning
Method of learning that occurs through rewards and punishments for behaviour.
Through operant conditioning, an individual makes an association between a particular behaviour and a consequence (Skinner, 1938).
Learned consequences modify the type and frequency of behaviour
Describe the work and views of behaviourism
Published Psychology from the Standpoint of a Behaviorist in 1919
Classical (Pavlovian) and instrumental conditioning can explain much, if not all, behavior.
Inferring internal states is redundant and unnecessary
Cognitive explanations are not scientific
Give operant conditioning techniques
POSITIVE REINFORCEMENT
Increasing a behaviour through reward
e.g. an extra 30 minutes TV for helping with clearing up
NEGATIVE REINFORCEMENT
increasing a behaviour by removing an aversive stimulus
e.g. leaving for work early to avoid being stuck in traffic
EXTINCTION
decreases a behaviour slowly due to NOT experiencing an expected positive stimulus.
e.g. Pavlov’s dog no longer salivates when hears bell as not provided with food
Describe the components of obsessive compulsive disorder
Obsessions
Recurrent & persistent thoughts, images or urges that are experienced as intrusive and unwanted and cause marked anxiety or distress.
Compulsions
Repetitive behaviours (e.g. hand washing, checking) or mental acts (e.g. praying, counting) that the person feels driven to perform in response to an obsession to reduce distress or preventing some dreaded event or situation.
Describe the behavioural theory of OCD
Two stage theory of the acquisition & maintenance of fear and avoidance behaviour (Mowrer, 1939; 1960).
Stage 1 Acquisition – Thoughts, images, objects can acquire distressing properties through association e.g. an obsession is linked to distress e.g. thought of hurting an animal.
Stage 2 Maintenance – Avoidant, escape responses i.e. RITUALS develop because they decrease anxiety/distress and are maintained through negative reinforcement.
Explain exposure and response prevention as a treatment for OCD
Expose people to obsessional stimuli
Prevent compulsions used to lessen distress associated with the obsessional stimuli
Repeated exposure to the obsessions while using strict response prevention leads to habituation
- Generate a list of feared situations (external/internal)
- Teach “subjective units of distress” (SUDS) and get a rating for each situation
- Hierarchies typically need 10-20 steps
- Refinement to hierarchy often required during treatment
Give some successful for the behavioural model of OCD
Foundation for experimental investigation of OCD
- Provided some support for Mowrer’s Model (at least for the maintenance phase)
- Delineated between forms of compulsive behaviour
- Development of an effective therapy (ERP)
Give some limitations of the behavioural model of OCD
- Little evidence supporting acquisition stage
- Does not adequately explain the cognitive aspects of OCD
- Not all obsessions provoke anxiety/distress
- Compulsions can elevate anxiety
- Doesn’t differentiate between anxiety disorders
Describe Beck’s cognitive theory of emotional disorders
(Beck, 1967; 1976)
Emotional disorders maintained by ‘distorted thinking’
Distorted thinking characterised by frequent negative automatic thoughts (NATs)
NATs are a product of beliefs and assumptions stored in memory i.e. Schemas
Beliefs & assumptions represent knowledge structures, which are relatively stable constructs termed schemas (Bartlett, 1932)
Schemas guide behaviour and shape interpretation of events.
Behaviour and thinking follows logically from the beliefs and assumptions.
Early Experience
Dysfunctional Schemas
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Critical Incident
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Schema Activation
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Negative Automatic Thoughts
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Symptoms
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Behavioural Motivational Affective Cognitive Somatic
Describe what schemas are
Focus of therapy; based on the content of schemas
Beliefs
Unconditional in nature perceived as reflecting the truth about the self and world.
Declarative statements; ‘I’m worthless, I’m a failure, I can’t cope’
- Assumptions
Conditional in nature- guide behaviour
‘If I don’t achieve success in everything I am a failure’
Explain the relationship between schemas and negative automatic thoughts
Specific schemas/NATS are associated with specific disorders. ‘Content specificity hypothesis’
Schemas can arise from early experience, or develop subsequently to the development of the disorder.
Negative Automatic Thoughts
Reflect the activation of schemas
Appraisals/interpretation of events
Automatic, rapid, involuntary, plausible, thoughts/images, systematic errors
Describe reasoning biases
Selective abstraction: Draw conclusions based on limited evidence without considering wider evidence
Catastrophizing: Overestimating the significance of events
Dichotomous thinking: Black & white thinking /all bad or all good
Overgeneralisation: Applying a belief based on one situation to all situations