Specialist Option 1: Clinical Psychology A2
- Syllabus
- 9990–2028–2029
- Section
- —
- Level
- A2
Clinical Psychology A2 overview and key studies
- Syllabus
- 9990–2028–2029
- Topic
- —
- Level
- A2
Clinical psychology compares explanations, evidence and treatments across levels
Clinical psychology studies mental and behavioural disorders/conditions, competing explanations and available treatments. For every topic: describe, compare and evaluate theory/evidence/treatment; evaluate AS/A Level methods; apply issues/debates; and judge real-world use.
| Level | Explanations/measures | Treatments/examples | Main evaluation |
|---|---|---|---|
| Biological | Genetic/biochemical mechanisms; physiological measures such as blood pressure | Medication and biological treatments such as ECT | Objective mechanism evidence, reductionism, side effects, individual variation |
| Behavioural/learning | Conditioning, reinforcement and avoidance | Exposure/systematic desensitisation/behaviour change | Observable/testable and applied, but may omit cognition/history |
| Cognitive | Beliefs, appraisals, biases and schemas | CBT/cognitive restructuring | Targets meaning/skills; self-report and causal-direction issues |
| Psychodynamic | Unconscious conflict and early experience | Insight-oriented therapy | Holistic/idiographic depth; low falsifiability/reliability concerns |
| Integrated | Biological × psychological × social interaction | Combined/stepped/personalised care | Realistic but complex to isolate and evaluate |
For each condition compare: defining features/measurement → explanation mechanism and prediction → supporting/challenging evidence → treatment mechanism and outcome → validity/reliability/ethics → nature–nurture, reductionism–holism, determinism, culture/individual differences → appropriate application.
A diagnosis describes a pattern; it is not an explanation. Treatment success does not prove the treatment's theory caused the condition because placebo, common therapy factors, regression and natural change remain alternatives. Competing levels may interact.
Five Clinical key studies anchor five conditions and five evidence architectures
| Key study | Clinical anchor | Evidence architecture to learn |
|---|---|---|
| Freeman et al. (2003) | Persecutory ideation/paranoia | Virtual-reality social environment, ideation measures and validity/application |
| Oruč et al. (1997) | Bipolar disorder | Candidate-gene association, groups/alleles and correlation-not-cause boundary |
| Grant et al. (2008) | Gambling disorder | Opiate-antagonist versus placebo treatment and response predictors |
| Chapman & DeLapp (2013) | Blood-injection-injury phobia | Nine-session manualised CBT single-case trajectory |
| Lovell et al. (2006) | Obsessive-compulsive disorder | Telephone versus face-to-face CBT randomised non-inferiority trial |
Route for each: condition/context → explanation/treatment question → design/sample/procedure/measures → exact results → bounded conclusion → main discussion → method/ethics → relevant debates/application. Downstream cards supply the detailed study evidence; this card prevents cross-study mixing.
| Comparison opportunity | Studies |
|---|---|
| Explanation versus treatment evidence | Freeman/Oruč versus Grant/Chapman/Lovell |
| Laboratory/VR, genetic association, RCT and case study | Across all five |
| Nomothetic group effects versus idiographic change | RCT/association studies versus Chapman case |
| Biological versus psychological/combined intervention | Oruč/Grant versus Chapman/Lovell |
The citation list is a map, not the complete study knowledge. Do not transfer a sample, measure or result from one study to another. Genetic association is not a treatment trial; non-inferiority is not proof of identical outcomes; a single successful case is not population efficacy.
Every Clinical key study requires a complete theory–method–evidence–debate audit
| Layer | Required knowledge and evaluation |
|---|---|
| Context/relationship | Clinical condition, prior evidence and relation to other studies |
| Theory | Main biological/psychological explanation or treatment mechanism and prediction |
| Aim/hypothesis | Exact question and stated null/alternative where present—do not invent one |
| Design/method | Method/design, sample size/demographics/sampling if known, variables/controls, procedure and data techniques |
| Evidence | Exact quantitative/qualitative results and correct comparison |
| Meaning | Findings, bounded conclusion and main discussion points/alternatives |
| Evaluation | AS/A Level methods, validity/reliability/ethics/generalisation/application |
| Debates | Relevant nature–nurture, levels, determinism, culture, idiographic/nomothetic and individual/situational analysis |
Evidence paragraph: make clinical claim → cite exact study design/sample/result → explain the inference → evaluate the method/alternative → connect to debate or real-world use → judge scope. Keep result (observed pattern) separate from conclusion (meaning).
Use ICD-11 terminology for syllabus/assessment consistency. Appropriate alternative terms are acceptable; define them and keep the construct consistent. Language should describe people respectfully and avoid converting group averages into identity or inevitability.
Do not invent missing hypotheses, demographics or sampling. 'If known/if stated' is a source boundary. A complete method narrative without theory/results/discussion is incomplete, as is a result list without inference, methods and debates.
1.1 Schizophrenia
- Syllabus
- 9990–2028–2029
- Topic
- 1.1
- Level
- A2
Schizophrenia diagnosis integrates symptom domains; VR tests persecutory interpretation under control
ICD-11 schizophrenia diagnosis is a qualified clinical judgement based on a characteristic pattern over time, significant disturbance/impairment and exclusion of better explanations such as substances, medical conditions or mood disorders. Teaching symptom domains supports recognition, not self-diagnosis.
| Domain | Examples | Classification warning |
|---|---|---|
| Positive | Persistent delusions, hallucinations, passivity/control experiences, disorganised thought/speech | Added/distorted experiences—not 'good' |
| Negative | Restricted emotional expression, limited speech, reduced motivation/pleasure and social withdrawal | Reduced usual function—not laziness |
| Psychomotor/disorganisation | Markedly disorganised behaviour, agitation/slowing or unusual postures | Must consider clinical context/exclusions |
| Cognitive | Difficulties in attention, memory and problem-solving | Important functioning profile; not sufficient alone |
Delusions can involve persecution, reference, control/passivity, grandeur or other fixed interpretations. Idiographic case evidence records onset, specific experience, family/social context and functional impact; e.g. an early-onset case may combine academic decline, voices and behavioural change. Rich detail aids formulation but cannot establish population frequency or cause.
| Freeman et al. (2003) element | Exact evidence |
|---|---|
| Aim/sample | Test whether neutral VR characters elicit persecutory thoughts and which factors predict them; 24 nonclinical participants |
| Procedure/setting | Participants entered a standard neutral virtual social environment with computer-generated people, then completed symptom/thought measures |
| VR-Paranoia measure | 15 items, 4-point 0-3 agreement scale; items included ideas such as avatars watching or being hostile |
| Results | Positive views were common; some reported reference/persecution. Persecutory VR thoughts were associated with higher interpersonal sensitivity and anxiety |
| Conclusion | Neutral contexts can receive different social interpretations; vulnerability/anxiety may contribute and VR can study ideation under control |
| Strength | Limitation |
|---|---|
| Same neutral avatars/environment isolate interpretation and permit safe repeatable exposure | Small self-selected nonclinical sample cannot directly generalise to diagnosed schizophrenia |
| Questionnaire plus comments capture quantitative and qualitative appraisal | Self-report/demand and subjective avatar interpretation affect validity |
| VR balances control with social immersion and potential safe clinical application | Technology/artificial embodiment may differ from real relationships and current systems may change temporal validity |
Freeman did not show avatars were hostile or test a schizophrenia treatment. Participants were nonclinical and the result supports a continuum/interpretation method. Diagnosis requires a broader clinical pattern; one unusual belief, voice or VR rating is insufficient.
Genetic vulnerability, dopamine pathways and cognitive monitoring explain different schizophrenia features
| Explanation | Mechanism → symptom | Evidence | Boundary |
|---|---|---|---|
| Genetic | Polygenic inherited vulnerability affects neurodevelopment/risk | Concordance is much higher for identical than non-identical twins; about 50% is a common twin-study estimate | Below 100% means genes are neither necessary nor sufficient; shared environment and diagnostic assumptions matter |
| Dopamine | Excess D2-related activity in subcortical/limbic pathways contributes to positive symptoms; reduced prefrontal dopamine contributes to negative/cognitive symptoms | Antipsychotic action and pathway/imaging evidence support involvement | Treatment response is indirect causal evidence; multiple transmitters/pathways and environment matter |
| Cognitive (Frith) | Faulty central self-monitoring misattributes inner speech/actions to external sources; theory-of-mind/monitoring problems can contribute to hallucinations, delusions and disorganisation | Source-monitoring tasks: patients with incoherent speech can perform worst identifying self/other/computer origin | Cognitive impairment may be consequence/correlate and Frith acknowledges biological contribution |
Case application must link fact to mechanism: an identical twin raises inherited vulnerability but does not determine outcome; a voice perceived as external fits source-monitoring failure; positive and negative symptoms map to different dopamine circuits rather than 'too much dopamine everywhere'.
| Debate | Comparison |
|---|---|
| Nature–nurture | Genes/biochemistry emphasise nature, yet stress/experience can influence expression and cognition |
| Reductionism–holism | Dopamine is biologically reductionist; cognitive model preserves subjective process but remains partial; interaction is more holistic |
| Determinism–free will | Vulnerabilities/processes constrain experience without implying chosen symptoms; coping/treatment preserves agency |
| Nomothetic–idiographic | General models guide prediction, while individual symptom meaning/history guides formulation |
No model means the person chooses hallucinations/delusions. Concordance is association, not a single schizophrenia gene. Dopamine abnormalities differ by pathway. Cognitive explanation concerns impaired attribution/monitoring, not simply irrationality or lack of intelligence.
Schizophrenia management balances antipsychotic, ECT and CBT mechanisms with sustained outcomes and risk
| Treatment | Mechanism/use | Strength | Risk/boundary |
|---|---|---|---|
| Typical antipsychotic | Strong D2 blockade, especially positive-symptom reduction | Established acute efficacy, relatively low cost | Extrapyramidal/tardive effects, sedation; limited negative/cognitive effect |
| Atypical antipsychotic | Broader dopamine/serotonin actions | Can reduce positive symptoms with different movement-risk profile | Metabolic/weight/cardiovascular and other drug-specific risks; response varies |
| ECT | General anaesthetic + muscle relaxant; unilateral/bilateral scalp electrodes deliver brief controlled current causing a seizure | Can be considered in severe/acute resistant presentations | Memory loss/confusion, anaesthetic risk, fear/stigma, consent; relapse can occur |
| CBT | Alliance, psychoeducation, diary/homework, cognitive restructuring/alternative explanations and coping/relaxation | Individualised management of delusions, hallucinations, distress and functioning | Time/engagement/cost; manages responses rather than guaranteeing symptom removal |
| Sensky et al. (2000) | Exact evidence |
|---|---|
| Aim/design | Compare CBT plus routine care with non-specific befriending plus routine care for persistent medication-resistant schizophrenia; randomised controlled design |
| Sample | 90 patients aged 16-60; 46 CBT, 44 befriending; clinics in northern England/London |
| Delivery/control | Mean about 19 individual sessions over up to 9 months; experienced supervised nurses; befriending controls therapist contact |
| Measurement | Blind raters at baseline, post-treatment and 9-month follow-up; positive/negative/depression scales |
| Result | Both groups improved by end of treatment; at follow-up CBT continued/improved while befriending gains did not persist similarly |
| Conclusion | CBT can produce sustained benefit for persistent positive and negative symptoms beyond non-specific contact, within this medication-resistant sample |
For a delusion/voice: build trust; explain symptoms without confrontation; record trigger, belief/voice, emotion and behaviour; examine evidence and generate safer alternative interpretations; rehearse coping/relaxation; complete homework; review functional change. CBT does not search childhood for the cause in this syllabus application.
ECT evaluation separates procedure from outcome: anaesthesia/muscle relaxation and brief seizure; immediate confusion and reported short-term memory loss; some responders relapse within six months. A longitudinal experiment should pre-specify side-effect DVs, comparable treatment groups, other-care controls and repeated follow-ups.
| Lens | Judgement |
|---|---|
| Idiographic–nomothetic | Standard drug/ECT/CBT protocols are nomothetic; dose, goals, beliefs, side effects and response require idiographic tailoring |
| Experiment/longitudinal | Sensky's randomisation, befriending and blind ratings strengthen inference; follow-up tests maintenance, but attrition/sample specificity matter |
| Generalisation | Medication-resistant 16-60-year-old UK patients do not represent all diagnoses, cultures or treatment responders |
| Ethics | Capacity/informed consent, withdrawal, coercion and harm-benefit are acute for ECT/psychosis; recovery-oriented shared decisions matter |
Sensky did not show immediate CBT superiority on every outcome: both groups improved initially, with stronger sustained CBT pattern at follow-up. ECT uses anaesthesia and muscle relaxation. Treatment response does not prove one cause, and management should not be presented as universal or coercive advice.
1.2 Mood (affective) disorders: depressive disorder (unipolar) and bipolar
- Syllabus
- 9990–2028–2029
- Topic
- 1.2
- Level
- A2
Episode history distinguishes depressive from bipolar disorders; BDI measures reported severity
| Pattern | Core episode features | Diagnostic distinction |
|---|---|---|
| Depressive episode | Persistent low/irritable mood or reduced interest/pleasure with cognitive, energy, sleep/appetite, guilt/hopelessness and possible death thoughts causing impairment | Recurrent/single depressive disorder has no history of manic or hypomanic episode |
| Manic episode | Markedly elevated/expansive or irritable mood plus increased activity/energy, reduced sleep need, pressured speech, racing thoughts, inflated self-esteem/risk behaviour and marked impairment | Presence establishes bipolar spectrum episode history rather than unipolar depression |
| Bipolar course | Manic/hypomanic and depressive episodes or mixed features across time | More than ordinary mood variation; episode pattern/severity/duration and exclusions matter |
| BDI feature | Use | Boundary |
|---|---|---|
| 21 self-report items | Samples cognitive, affective and physical depressive symptoms | Depends on insight, literacy, culture, recall and response style |
| Four response levels scored 0-3 | Sum 0-63; higher total indicates greater reported severity | Quantifies subjective experience; score is not an objective diagnosis |
| Syllabus bands | 1-10 normal ups/downs, 11-16 mild, 17-20 borderline, 21-30 moderate, 31-40 severe, >40 extreme | Interpret as taught bands alongside clinical assessment, risk and alternative causes |
| Repeat use | Track reported change over time | Practice, situation and treatment expectancy can affect scores |
Validity strengths: multiple symptom domains, graded rather than yes/no responses, overlap with recognised depressive features and concurrent relation to other depression scales. Limits: nomothetic fixed items omit unique experience, social desirability/self-report bias, somatic symptoms can have other causes, and BDI does not detect mania adequately.
Use BDI as one measure: obtain consent/privacy, explain time frame, complete all items, sum accurately, note item-level risk, combine with qualified interview/history/functional evidence and repeat consistently if monitoring. Never infer bipolar versus unipolar from total score alone.
Bipolar is defined by manic/hypomanic episode history, not simply severe depression or moment-to-moment mood change. BDI is a psychometric self-report of severity and may support assessment; it cannot independently diagnose or replace safety evaluation.
Mood-disorder explanations connect biological vulnerability, cognition, attribution and perceived control
| Explanation | Mechanism | Evidence/boundary |
|---|---|---|
| Biochemical | Dysregulated monoamine systems such as serotonin/noradrenaline affect mood, motivation and cognition | Antidepressant action supports involvement but delayed/incomplete response and correlational direction prevent a simple low-serotonin cause |
| Genetic | Polygenic vulnerability raises probability of depressive/bipolar episodes | Family/twin/association evidence is probabilistic and environment affects expression |
| Beck cognitive | Negative schemas/cognitive triad about self, world and future produce automatic biased thoughts | Explains depressive appraisals and supports restructuring; thoughts may be cause, consequence or reciprocal |
| Attributional style | Negative events attributed internally, globally and stably increase hopelessness | Seligman-style evidence links pessimistic style to later depression risk; culture/context and self-report matter |
| Learned helplessness | Repeated uncontrollable outcomes create expectation that actions cannot change events, reducing effort and mood | Explains passivity/individual differences; animal/task transfer and actual adversity limit generalisation |
| Oruč et al. (1997) | Exact evidence |
|---|---|
| Aim | Test association of serotonin 5-HT2C receptor and 5-HT transporter polymorphisms with bipolar disorder |
| Sample/design | 42 Croatian bipolar I patients (25 women, 17 men, 31-70) and 40 age/sex-matched healthy controls |
| Procedure | DNA polymorphism analysis; family history checked |
| Results | No significant total-sample 5-HT2C association; 16 patients had first-degree family history; female subgroup showed trends for both polymorphisms |
| Conclusion | Variants might make a minor sex-linked contribution to susceptibility, not a single causal bipolar gene |
| Lens | Evaluation |
|---|---|
| Reliability | Standard DNA procedures/objective genotyping replicate; historical family diagnoses/records may vary |
| Nature–nurture | Gene/biochemistry support nature; null/partial associations and stress/cognition support interaction |
| Reductionism–holism | Molecular and single-style models are testable but partial; integrated vulnerability–stress account is broader |
| Determinism | Vulnerability/processes constrain probability, not inevitable episodes; coping/treatment and environment matter |
| Individual–situational | Attribution/control expectations are individual interpretations of real situations; neither level alone suffices |
Oruč studied bipolar I and found no significant main total-sample association; subgroup trends are not proof of a female bipolar gene. Learned helplessness is an acquired expectation of no control, not a moral failure or voluntary refusal. Biochemical association/treatment effects do not settle causal direction.
Mood treatment targets monoamine availability or maladaptive appraisals and beliefs
| Class | Main mechanism | Main strengths/risks |
|---|---|---|
| Tricyclics | Block reuptake of serotonin and noradrenaline, increasing synaptic availability | Effective for some severe depression; anticholinergic, sedation, cardiovascular and overdose toxicity concerns |
| MAOIs | Inhibit monoamine oxidase so serotonin/noradrenaline/dopamine breakdown falls | Option after other failures; food/drug interactions and blood-pressure risk require strict management |
| SSRIs | Selectively inhibit serotonin reuptake | Often first-line due to tolerability/ease; delayed response, gastrointestinal/sexual/sleep effects and individual non-response |
| Therapy | Change process | Application |
|---|---|---|
| Beck cognitive restructuring | Identify negative triad/automatic thought → record mood/thought/behaviour → test evidence/reality → generate balanced alternative → homework/practice | Challenge depressive underestimation and, for bipolar management, overly positive/risky manic appraisals as well as negative depressive ones |
| Ellis REBT | A activating event → B belief → C emotional/behavioural consequence → D actively dispute irrational/demanding belief → E effective new philosophy/consequence | Show event does not directly cause mood; challenge absolutist 'must/awful/worthless' belief and rehearse rational alternative |
Treatment answer: identify specific symptom/episode and goal; explain exact mechanism; give a personalised step/example; predict measurable short/long outcome; evaluate engagement, side effects, relapse, access/culture, consent and combination with clinical monitoring. Medication and therapy are not one-size-fits-all.
| Lens | Comparison |
|---|---|
| Application | Drugs are accessible/standardised and may reduce severe symptoms; cognitive skills can transfer after therapy |
| Reductionism–holism | Drugs target biology; restructuring/REBT include meaning but may still underweight social adversity |
| Individual–situational | Drug response/side effects and beliefs are individual; stress, poverty, loss and support remain situational |
| Determinism–free will | Mechanisms constrain mood; choosing/engaging in medication/homework expresses agency within illness |
| Generalisation | Group efficacy does not predict each person, bipolar phase, culture or comorbidity |
REBT treatment requires disputation and effective new belief—ABC alone only explains the problem. Cognitive restructuring is not forced positive thinking: it tests evidence and builds balanced alternatives. Antidepressants alter transmission gradually and do not instantly create happiness or prove monoamine deficiency caused the disorder.
1.3 Impulse control disorders
- Syllabus
- 9990–2028–2029
- Topic
- 1.3
- Level
- A2
Diagnose the pattern, then measure kleptomania symptoms with K-SAS
| Syllabus disorder | Pattern to establish | Distinguishing evidence |
|---|---|---|
| Kleptomania | Recurrent failure to resist impulses to steal objects not needed for personal use or monetary value | Rising tension before stealing and pleasure, gratification or relief during/after; consider alternative motives and explanations |
| Pyromania | Recurrent failure to control strong fire-setting impulses, with multiple acts or attempts | No apparent external motive; fascination/preoccupation with fire, arousal before and pleasure/relief during or after; exclude another disorder or intoxication |
| Gambling disorder | Persistent online/offline pattern with impaired control, increasing priority and continuation/escalation despite harm | Extended course, which may be continuous or recurrent, plus significant distress or impairment in important life areas |
Application rule: quote the exact criterion, identify matching case evidence, then explain the link. Also test disconfirming evidence. One fire with revenge motive may fail pyromania criteria; gambling frequency alone lacks impaired control, priority, persistence and harm. Shame, illegality, mixed motives and incomplete disclosure can reduce diagnostic validity.
| K-SAS domain over the past week | What its closed, scaled prompts ask |
|---|---|
| Urges | Average strength, frequency, hours preoccupied and ability to control |
| Thoughts | Frequency, hours thinking and ability to control |
| Before/during theft | Anticipatory tension/excitement and excitement/pleasure on a successful theft, including estimated experience if no theft occurred |
| Consequences | Emotional distress and personal relationship, financial, legal, work or health trouble |
| Behaviour | Number of thefts |
The production mark-scheme evidence lists 12 prompts. Their standardised quantitative responses allow comparison and monitoring, while optional explanation/interview data can add qualitative meaning.
| Lens | Evaluation |
|---|---|
| Nomothetic–idiographic | Same prompts support comparison, but fixed categories can miss a person's motive, context and lived meaning |
| Objective–subjective | Numerical scoring is standardised; the underlying memory, estimate and disclosure remain subjective |
| Validity | One-week focus limits vague lifetime recall, but social desirability, shame and illegal behaviour may suppress reports |
| Method choice | Interview/questionnaire are self-report; ethical observation or case-study evidence can triangulate without deliberately enabling harm |
K-SAS measures kleptomania symptom experience and change; it is not a pyromania scale and does not independently diagnose. This card is curriculum teaching, not a self-diagnosis tool. Real assessment and risk management require qualified professionals.
Reward biology, reinforcement and feeling-state memory explain repeated impulses at different levels
| Explanation | Mechanism | Applied example and boundary |
|---|---|---|
| Biological: dopamine | Reward-related dopamine activity contributes to motivation, anticipation and learning; cues and rewarding outcomes can strengthen wanting and repetition | A gambling cue may acquire motivational salience, but dopamine involvement is probabilistic and not a complete single cause |
| Behavioural: positive reinforcement | A consequence added after behaviour increases its future frequency | Money can reinforce gambling; thrill/relief can reinforce stealing or fire setting; intermittent wins maintain gambling because the next response might be rewarded |
| Cognitive: Miller's feeling-state theory | A triggering behaviour becomes linked to intense positive emotion, thoughts and physiological arousal, forming a state-dependent feeling-state memory | The person repeats the behaviour to recreate euphoria/power despite harm; the integrated remembered state, not emotion alone, drives compulsive repetition |
Common cycle: cue or opportunity → anticipation/urge → impulsive behaviour → reward, thrill or relief → stronger cue-behaviour association and remembered feeling-state → greater repetition risk. The three explanations illuminate different links rather than being mutually exclusive.
| Debate | Comparison |
|---|---|
| Nature–nurture | Dopamine emphasises biological processes; reinforcement and feeling-state links are largely acquired through experience; interaction is plausible |
| Individual–situational | Cognitive feeling-states are person-specific; reinforcement depends on environmental schedules/opportunities; individuals may also select situations |
| Reductionism–holism | Dopamine and reinforcement isolate testable parts; Miller is more holistic because emotion, cognition, physiology and memory operate together, yet still omits some social/biological factors |
| Determinism–free will | Reward histories and neural processes constrain behaviour, but cue avoidance, environmental change and therapy preserve degrees of agency |
| Application/generalisation | Each model suggests intervention targets, but one case or one disorder cannot establish the theory for every impulse-control disorder |
Evidence could combine structured observation of frequency, a qualified interview about feeling-states, and a questionnaire with standardised scaled items. Observation improves behavioural objectivity but cannot directly reveal private thoughts; self-report accesses the feeling-state but is vulnerable to interpretation and disclosure bias.
Positive reinforcement means a rewarding consequence increases behaviour; it does not mean praise and is not punishment. Miller's feeling-state contains emotions, thoughts and physiological arousal. Dopamine participation does not mean a person has no choice or that one chemical fully explains the disorder.
Treatments target reward, imagined aversion or relaxed non-enactment
| Treatment | Target and procedure | Expected change |
|---|---|---|
| Opiate-antagonist drug/placebo trials | Pharmacologically reduce opioid-mediated reward/urge processes; compare active drug with inert placebo under controlled conditions | Test whether urges/behaviour improve beyond expectancy and time |
| Covert sensitisation | Rehearse the impulse sequence in imagination, pair it with vivid aversive consequences, then end aversion when the person rejects/leaves the act | The cue/act becomes less attractive through imagined aversive conditioning |
| Imaginal desensitisation | Learn progressive muscle relaxation, visualise graded cue/urge situations, imagine not acting or leaving while staying relaxed, and practise between sessions | Lower arousal and weaken the urge-behaviour/positive-feeling connection |
| Grant et al. (2008): verified production evidence |
|---|
| Two gambling-disorder drug-versus-placebo trials used nalmefene and naltrexone. |
| The two trial durations were 16 weeks and 18 weeks; the available exact question evidence does not require assigning a duration to a named drug. |
| Research ran across the University of Minnesota and outpatient psychiatric treatment centres. Multiple locations may broaden participant/settings and generalisability, but site differences and self-selection can also create participant or procedural variation. |
| Placebo comparison helps separate pharmacological change from expectation; group findings still do not guarantee an individual response. |
Glover (1985) covert sensitisation: a participant imagined increasing nausea while approaching an intended supermarket theft, vomiting when lifting the item and attracting other shoppers' attention. The unpleasant imagery stopped when she replaced the item, turned away and left. The aversive event is imagined—this is not relaxation-based desensitisation.
Blaszczynski and Nower (2003) syllabus treatment: progressive relaxation is paired with imagined gambling/impulse cues and successful non-enactment. Applied to pyromania, the learner should describe relaxation, visualising planning/approaching the fire-setting situation, imagining leaving without acting while relaxed, repeated practice, and reduced anticipatory arousal—not nausea or punishment imagery.
| Lens | Evaluation |
|---|---|
| Application | Drugs are standardised; imagery techniques can be practised when safe and may transfer across situations |
| Reductionism–holism | Drug treatment reduces the problem to reward biology; CBT procedures include cues, thoughts, arousal and behaviour but may omit wider context |
| Idiographic–nomothetic | Standard protocols allow replication; imagery must be personalised to triggers and tolerability |
| Evidence/generalisation | Controlled/placebo and multisite features strengthen inference; case evidence and disorder/site differences limit population claims |
| Ethics/suitability | Monitor adverse effects, informed consent, distressing imagery, comorbidity and risk; no technique should recreate illegal or dangerous behaviour |
Covert sensitisation adds imagined aversion; imaginal desensitisation adds relaxation and successful non-enactment. Neither is simply imagining the behaviour. Drug/placebo evidence tests average causal effects under study conditions and is not treatment advice or proof of a universal cure.
1.4 Anxiety disorders and fear-related disorders
- Syllabus
- 9990–2028–2029
- Topic
- 1.4
- Level
- A2
Separate diagnostic pattern from GAD-7 and BIPI measurement
| Disorder | Required pattern | Distinguishing application |
|---|---|---|
| Generalised anxiety disorder | Persistent, excessive anxiety/worry across several everyday domains, difficult to control, with associated tension/arousal symptoms and impairment | Not a brief response to one event or one specific feared object; consider duration, breadth, distress, function and alternatives |
| Agoraphobia | Marked fear/anxiety across situations where escape or help may feel difficult, followed by avoidance/endurance and impairment | Context and culture matter: staying home may reflect danger or norms rather than disproportionate fear |
| Specific phobia: blood-injection-injury | Marked, disproportionate fear/avoidance of blood, injections or injury causing distress/impairment | May include a distinctive diphasic response and faintness; establish persistence and functional effect rather than diagnosing from dislike alone |
| GAD-7 | Exact use | Boundary |
|---|---|---|
| Seven symptoms over the previous two weeks | Nervous/on edge; uncontrolled worry; excessive worry; trouble relaxing; restlessness; irritability; fear something awful may happen | Frequency is not severity, cause or life impact |
| Four response levels | 0 not at all, 1 several days, 2 more than half the days, 3 nearly every day | Self-report depends on recall, insight and honest disclosure |
| Total 0–21 | Quick screening and repeated monitoring during/after therapy | Screening supports referral/monitoring; it cannot provide full diagnosis alone |
| Mas et al. (2010) BIPI development | Evidence |
|---|---|
| Purpose/sample | Build a Spanish-population blood/injection phobia measure; 174 Spanish-speaking participants |
| Instrument | Self-administered inventory covering 18 blood-related situations/stimuli and 27 phobic responses on four-point Likert-type ratings |
| Reliability | Cronbach's alpha .98 indicates very high internal consistency |
| Validity/structure | Good concurrent, convergent and discriminant validity; one factor explained 76% of stimulus-content and 74% of phobic-response variance |
| Boundary | Strong psychometrics in this sample do not remove self-report bias or guarantee cross-cultural equivalence |
A valid assessment triangulates: exact ICD-11 pattern and impairment; standardised quantitative screening; qualitative clinical interview; and, only when safe and ethical, overt controlled observation. Reliability means consistency, not truth. Numerical scoring is standardised, but the experience and report remain subjective.
GAD-7 is a broad anxiety screening/monitoring measure; BIPI is specific to blood/injection stimuli and responses. Neither is a self-diagnosis tool. Real diagnosis, fainting risk and treatment decisions require qualified clinical assessment.
Genetic vulnerability, conditioned fear and unconscious displacement make different causal claims
| Explanation | Mechanism | Study anchor |
|---|---|---|
| Biological/genetic | Inherited vulnerability may raise probability of intense fear and physiological fainting response | Öst (1992) family-history and behavioural/physiological comparison |
| Behavioural | Neutral stimulus (NS) paired with fear-producing unconditioned stimulus (UCS) produces UCR; NS becomes CS and evokes conditioned fear response (CR); generalisation spreads fear to similar stimuli | Watson and Rayner (1920), Little Albert |
| Psychodynamic | Unacceptable childhood id–ego conflict is repressed; anxiety is displaced onto a safer symbolic object, producing phobia | Freud (1909), Little Hans |
| Öst (1992) | Exact evidence and inference |
|---|---|
| Groups | 81 blood-phobic and 59 injection-phobic patients meeting diagnostic criteria |
| Methods | Clinical/background comparison with questionnaire/interview and behavioural/physiological tests |
| Findings | Same phobia in a first-degree relative: 61% blood group versus 29% injection group; feared fainting: 77% versus 48% |
| Conclusion | Family clustering and physiological response support inherited vulnerability, but shared family learning and retrospective self-report prevent a genes-only causal conclusion |
| Study | Mechanism reconstruction | Validity boundary |
|---|---|---|
| Little Albert | White rat NS + loud iron-bar noise UCS → crying UCR; rat became CS → crying/fear CR; fear generalised to similar furry/white objects | Observable change supports conditioning, but deliberate infant distress, artificial repeated pairing, one case and incomplete deconditioning limit ethics/ecological validity/generalisation |
| Little Hans | Horse fear interpreted as displaced fear of father during phallic-stage Oedipal conflict; horse features symbolised father | Longitudinal letters gave rich in-context data, but father/Freud interpretation, one child, unfalsifiable unconscious constructs and an actual frightening horse event weaken causal validity |
| Debate | Evaluation |
|---|---|
| Nature–nurture | Genetic is nature-oriented; conditioning is nurture; psychodynamic combines universal stages with individual childhood experience; interaction best fits mixed evidence |
| Determinism–free will | Genes, learned associations and unconscious conflict constrain behaviour, though treatment and chosen exposure allow agency |
| Case/longitudinal methods | Repeated observation shows development and reduces distant recall, but is slow, vulnerable to attrition/relationship bias and hard to generalise |
| Scientific validity | Conditioning variables are observable; genetic family association is correlational; unconscious symbolism is difficult to test or falsify |
Öst supports familial vulnerability, not inheritance of a single phobia gene. Albert shows one acquired fear under unusual conditions, not that all phobias require repeated trauma. Hans is evidence interpreted through Freud's theory, not direct measurement of unconscious conflict.
Match graded fear reduction and applied tension to different treatment targets
| Treatment | Ordered procedure | Main target |
|---|---|---|
| Systematic desensitisation | Teach relaxation → collaboratively build least-to-most fear hierarchy → expose at lowest step while relaxed → progress only when manageable → repeat across sessions | Reciprocal inhibition and gradual exposure weaken conditioned anxiety/avoidance |
| CBT for BII phobia | Psychoeducation → identify/test faulty predictions → balanced alternatives → SUDS-rated graduated in-vivo exposure and between-session practice | Fear meaning, expectancy, avoidance and behavioural confidence |
| Applied tension | Tense large arm/leg/torso muscles about 10–15 seconds, return toward normal for about 20–30 seconds, repeat/practise and use when faintness cues appear | Raises blood pressure to counter the BII diphasic/vasovagal fainting response |
Application must be contextual. Build hierarchy steps from the learner's exact trigger, state the relaxation or muscle-tension action at each step, explain the mechanism, and predict observable change. Applied tension is not ordinary relaxation: relaxing alone may worsen protection against fainting for some BII presentations.
| Chapman & DeLapp (2013), participant T | Evidence |
|---|---|
| Design | Idiographic adult case study; nine-session manualised CBT combining psychoeducation, cognitive restructuring, applied muscle tension and graduated in-vivo exposure |
| Measurement | Personal 0–100 SUDS hierarchy plus standardised anxiety/depression/BII and quality-of-life measures; objective/quantitative and subjective/qualitative evidence |
| Hierarchy examples | Blood pressure in pharmacy/by nurse/self, blood sugar self/by wife, phlebotomy live/video, tourniquet touching veins, physical/stress test |
| Outcome | At phlebotomy SUDS began about 40/100 then fell to nothing with minimal applied tension; follow-ups at 4, 10 and 12 months reported no fear/terror to medical stimuli |
| Inference | Detailed longitudinal change supports feasibility for T; combined components and one participant prevent isolating which element worked or generalising a universal effect |
| Lens | Evaluation |
|---|---|
| Idiographic–nomothetic | Personal hierarchy/SUDS fit T; manual and standard scales aid replication/comparison |
| Case/longitudinal | Nine sessions and 12-month follow-up show maintenance in one person; self-report, therapist expectancy and no control condition limit causality |
| Generalisation | CBT/exposure principles may transfer; applied tension specifically targets fainting-prone BII response, not every anxiety disorder |
| Access/ethics | Gradual collaboration supports consent/control, but cost, time, distress and dropout remain; exposure must be safe and qualified |
| Individual–situational | Treatment changes responses within feared situations while tailoring cognition, physiology and hierarchy to the individual |
Systematic desensitisation pairs graded exposure with relaxation; applied tension contracts muscles to raise blood pressure; CBT also changes predictions and avoidance. Do not begin with the most feared unsafe situation, and do not treat a single case as universal clinical advice.
1.5 Obsessive-compulsive disorder (OCD)
- Syllabus
- 9990–2028–2029
- Topic
- 1.5
- Level
- A2
OCD links intrusive obsessions, driven compulsions and significant cost
| ICD-11 syllabus feature | What to identify in a case |
|---|---|
| Obsessions | Repetitive, persistent, intrusive and unwanted thoughts, images or impulses linked to anxiety; attempts to ignore, suppress or neutralise them |
| Compulsions | Repetitive behaviours or mental acts driven by an obsession, rigid rule or need for completeness |
| Function | Ritual aims to reduce anxiety/prevent feared outcome but is excessive or not realistically connected |
| Threshold | Time-consuming (often more than an hour daily) or causes significant personal, family, social, educational or occupational distress/impairment |
| Range | Contamination, harm/violent images, doubt and symmetry; washing, checking, ordering, counting, repeating phrases and reviewing memories |
Case answer: identify exact intrusive content; identify exact behavioural or mental ritual; show repetition/rigidity; explain short relief or neutralisation; then connect time, distress or impaired sleep/work/social life. Neatness, preference or one repeated act without this chain is insufficient.
| Measure | Structure and use | Boundary |
|---|---|---|
| MOCI | 30 true/false self-report statements; total plus cleaning, checking, slowness and doubting/conscientiousness domains | Efficient symptom-pattern comparison but binary responses lose severity/meaning and symptom coverage is dated |
| Y-BOCS | 10 severity items: five obsession and five compulsion dimensions; each 0–4 from none through mild/moderate/severe to extreme; total 0–40 | Tracks time, interference, distress, resistance/control and treatment change; format may be clinician interview or self-report depending study |
Rapoport (1989) 'Charles' illustrates severe childhood washing rituals and functional cost rather than 'liking cleanliness'. Clomipramine brought marked relief—he could pour honey on his hands—but tolerance/relapse after about a year shows one case and temporary drug response do not settle diagnosis, cause or general efficacy.
Scores are quantitative and repeatable, but disclosure, shame, age/language and interpretation affect validity. Interviews add qualitative context yet can miss hidden intrusive thoughts. These are curriculum tools, not self-diagnosis; qualified assessment must consider alternatives and risk.
Five OCD explanations target vulnerability, appraisal, relief learning or childhood control
| Explanation | Mechanism | Evidence/boundary |
|---|---|---|
| Biochemical | Low serotonin and high dopamine activity are associated with threat/ritual regulation; oxytocin findings are mixed | SSRI response supports involvement, not a simple proven chemical cause |
| Genetic | Polygenic inherited vulnerability raises probability | Monzani: MZ 52% vs DZ 21% concordance; Lewis: 37% parents and 21% siblings; PTPRD/SLITRK3 associations are probabilistic |
| Cognitive thinking error | Inflated threat/responsibility and thought–action fusion make normal intrusions seem dangerous, producing neutralisation | Explains content and supports restructuring; appraisal may also follow symptoms |
| Behavioural operant | Compulsion gains positive consequences or, chiefly, removes anxiety temporarily (negative reinforcement), increasing repetition | Explains maintenance and ERP; does not alone explain original obsession |
| Psychodynamic | Anal-stage control conflict/fixation and reaction formation or undoing are expressed as rigid order/cleanliness rituals | Rich individual interpretation but unconscious constructs are difficult to test |
Trigger/intrusion → catastrophic appraisal and anxiety → ritual/mental neutralisation → brief relief → negative reinforcement → stronger future ritual. Biological vulnerability and learning history may affect entry/strength; no one step is a complete universal cause.
| Debate | Evaluation |
|---|---|
| Individual–situational | Genes, chemistry and appraisal are individual; triggers/reinforcement occur in situations; interaction fits variation |
| Nature–nurture | Biological models stress nature; cognitive/behavioural learning stress nurture; twin/family designs cannot fully separate shared environment |
| Reductionism–holism | Each model isolates a testable level but omits others; integrated cycle is broader |
| Determinism–free will | Neurobiology, learning and unconscious conflict constrain action; insight, ERP and cognitive change preserve agency |
| Idiographic–nomothetic | Psychodynamic formulation is personalised; scales/genetic rates seek general rules; neither alone predicts every person |
For a case, name the model, identify the exact trigger/thought/ritual or family evidence, trace its mechanism, and give one inferential limit. Praise after cleaning is positive reinforcement; anxiety relief after checking is negative reinforcement—not punishment.
High dopamine/low serotonin and familial rates are associations, not deterministic diagnosis. The behavioural explanation is strongest for ritual maintenance. Psychodynamic anal fixation is a theory-specific interpretation, not directly measured fact.
OCD treatment targets serotonin, threat appraisals and ritual relief
| Treatment | Procedure/mechanism | Main boundary |
|---|---|---|
| SSRI | Block selective serotonin reuptake, increasing synaptic availability; reduced anxiety may lower ritual urge; OCD doses may exceed depression doses under clinical supervision | Delayed/variable response, side effects/withdrawal and relapse; mechanism does not prove cause |
| ERP | Identify obsession–compulsion chain → grade triggers → expose in session/homework → prevent/reduce ritual → use coping statements → remain until anxiety falls and feared outcome is disconfirmed | Initially distressing, needs engagement, safety and personalised hierarchy; cause may remain |
| CBT | Psychoeducation and monitoring → test inflated threat/responsibility → balanced thought/plan → combine with ERP/homework and relapse preparation | Depends on comprehension, relationship, access, culture and practice |
| Evidence | Exact result and limit |
|---|---|
| Soomro SSRI meta-analysis | 17 studies, 3097 participants: SSRIs outperformed placebo and reduced Y-BOCS; group average does not predict individual/child response |
| Lehmkuhl et al. (2008) | Jason, age 12 with autism and OCD; 10 × 50-minute CBT/ERP sessions over 16 weeks; touched elevator buttons/door handles and resisted ritual with coping statements; Y-BOCS 18→3 |
| Child boundary | Early help may prevent entrenched rituals, but assent/comprehension, distress expression, parent permission, side-effect monitoring and generalisation from one child matter |
| Lovell et al. (2006) | Exact design/evidence |
|---|---|
| Aim/design | Randomised controlled non-inferiority comparison of telephone versus face-to-face CBT/ERP; no untreated group because delivery modes, not CBT efficacy, were compared |
| Participants | 72 UK outpatients from two hospitals, ages 16–65, OCD diagnosis and Y-BOCS ≥16; key severe/organic/substance/recent-medication exclusions |
| Intervention | 10 weekly sessions: telephone appointments 30 minutes with first/last one-hour face-to-face; face-to-face appointments 60 minutes |
| Measures/time | Self-report Y-BOCS, BDI, satisfaction; two pretreatment assessments then 1-, 3-, 6-month follow-up |
| Result | Six-month Y-BOCS difference −0.55 (95% CI −4.26 to 3.15); equivalent outcomes and high satisfaction; 77% telephone vs 67% face-to-face met taught clinically significant-change criterion |
| Lens | Evaluation |
|---|---|
| Reliability | Manualised same therapy, repeated standard scales and therapists across modes aid replication; tailoring/individual response reduce exact uniformity |
| Access/culture | Telephone halves appointment time and may improve remote access/privacy; technology, language, stigma and collectivist/individualist fit vary |
| Individual–situational | Personal obsessions/hierarchy and drug response are individual; delivery/exposure context is situational |
| Validity | Randomisation and active comparison support delivery equivalence; self-report, exclusions, UK services and no no-treatment group bound broader claims |
| Case/generalisation | Jason gives depth and autism adaptation; one child cannot establish nomothetic effectiveness |
ERP exposes the trigger and prevents the response; it does not prevent exposure. Telephone CBT received the same core treatment, so equivalence addresses delivery mode. These mechanisms and study outcomes are curriculum evidence, not individual medication or exposure instructions.