Topic H: Clinical psychology A2

Definitions of abnormality have moved from supernatural and moral explanations, through medical accounts, towards judgments that combine evidence about behaviour, distress and everyday functioning.

Earlier supernatural accounts could lead to punishment or exclusion. Medical classification reframed mental disorder as illness and encouraged treatment, while later psychological and social approaches emphasised cognition, learning, relationships, rights and individual experience. Each change can reduce one form of stigma yet create new labels.

Classification systems organise symptoms into diagnostic categories so clinicians and researchers can communicate, select support and compare outcomes.

Revisions respond to evidence and changing concepts. DSM-5, for example, combined several former autism diagnoses into autism spectrum disorder and added cultural-formulation guidance. ICD is designed for multilingual, international health reporting. Both use recognisable symptom patterns, but categories and thresholds can differ across manuals or editions.

A diagnosis is trustworthy only when clinicians apply criteria consistently and the resulting category accurately represents the person's difficulties in their cultural context.

Culture can change how distress is expressed, whether hearing a voice has spiritual or clinical meaning, and how a clinician interprets language. Cooper et al. found New York psychiatrists more likely than London psychiatrists to diagnose schizophrenia from the same filmed interviews, illustrating possible system or cultural bias.

Schizophrenia involves disturbances of perception, belief and thought organisation; biological explanations identify risk mechanisms rather than a single inevitable cause.

The dopamine account links excess mesolimbic dopamine activity with positive symptoms and reduced mesocortical activity with negative or cognitive symptoms. Glutamate dysfunction at NMDA receptors may alter dopamine regulation and explain a wider symptom range. Drug and imaging evidence supports involvement, but changes measured after illness or treatment do not settle causal direction.

The syllabus permits unipolar depression or anorexia nervosa as the other disorder; each requires symptoms plus one biological and one non-biological explanation.

Antidepressant response and twin evidence support biological involvement in depression; cognitive bias and CBT response support a cognitive pathway. Twin evidence supports anorexia vulnerability, while Becker's Fijian television study supports a cultural-learning influence.

Drug therapy aims to reduce symptoms biologically, while family therapy changes the social environment and the family's ability to support recovery; they are often combined.

Risperidone and other antipsychotics have reduced positive and negative symptoms in treatment studies. Reviews of family interventions report improved social functioning and lower relapse; high criticism, hostility or emotional over-involvement is associated with greater relapse risk.

For the optional disorder, drug therapy targets biological symptoms while CBT identifies and tests thought-behaviour patterns that maintain distress.

Combined antidepressant and CBT treatment can help some people with persistent depression. Routine-practice evidence from Hans and Hiller supports outpatient CBT but also shows meaningful dropout. For anorexia, CBT can improve beliefs and relapse outcomes, yet physical risk may first require coordinated nutritional and medical stabilisation.

Rosenhan tested whether hospital staff could distinguish people without mental disorder from patients once a psychiatric label and setting shaped interpretation.

Eight pseudo-patients—five men and three women—sought admission to 12 US hospitals across five states. They reported an unfamiliar same-sex voice saying 'empty', 'hollow' and 'thud', while other personal details were largely truthful. After admission they stopped simulating symptoms, behaved ordinarily and recorded ward experiences in notes and diaries.

All were admitted and ordinary behaviour was often interpreted through the diagnosis. They reported depersonalisation, powerlessness, limited privacy and little staff contact. The range of public/private and old/new hospitals strengthens relevance to US inpatient care of that era; standardised presenting symptoms support comparison.

Suzuki et al. assessed whether Japanese inpatients with schizophrenia showed different weight and nutritional status from healthy controls.

The sample contained 333 inpatients aged 16–80, diagnosed with DSM-IV-TR across nine psychiatric hospitals in Niigata Prefecture, and 191 healthy volunteers matched by age and sex. Height and weight produced BMI; fasting blood samples measured total protein, cholesterol, triglycerides and plasma glucose. Physical illness and recent drug-therapy changes were exclusion controls.

Underweight was more prevalent among the inpatients than in the general comparison group, while overweight/obesity prevalence was broadly similar. The findings support monitoring physical as well as mental health during long inpatient stays and reviewing food, activity and nutritional care.

Hans and Hiller asked whether outpatient CBT for adult unipolar depression remains effective—and how often people drop out—in ordinary clinical practice.

Their random-effects meta-analysis combined 34 non-randomised effectiveness studies of individual or group outpatient CBT. It calculated standardised mean gains at treatment end and six-month follow-up for depression severity, dysfunctional cognition, anxiety, distress and functional impairment, plus a weighted dropout rate. Results were benchmarked against high-quality RCTs.

Depression improvement was large for completers (d = 1.13) and intention-to-treat samples (d = 1.06); secondary outcomes showed moderate-to-large gains. Improvement was maintained six months after completion. Weighted mean dropout was 24.63%, and depression effects were smaller than benchmark RCT effects.

Ma, Quan and Liu tested whether perceived social support partly explains the association between core self-evaluation and depression.

A sample of 538 undergraduates—281 women and 257 men—completed standardised questionnaires measuring core self-evaluation, perceived social support and depression. Core self-evaluation covers broad judgments such as self-esteem and perceived competence. Correlations were entered into a mediation analysis to test whether support carried part of the self-evaluation–depression relationship.

Higher self-evaluation and greater perceived support were associated with lower depression, and social support was a partial mediator. This is consistent with a pathway in which more positive self-evaluation is related to perceiving or seeking support, which in turn relates to fewer depressive symptoms. 'Partial' means a direct association remained.

Becker et al. examined whether prolonged exposure to television was associated with changing eating attitudes among ethnic Fijian adolescent girls in a previously media-naive setting.

A prospective multi-wave cross-sectional design compared separate schoolgirl samples in Nadroga: 63 participants in 1995, within weeks of television's introduction, and 65 in 1998 after three years of exposure. Both completed a culturally adapted 26-item Eating Attitudes Test; semi-structured interviews with a subset explored symptoms, body image and television meaning.

Indicators of disordered eating were significantly more prevalent in 1998. Interview narratives described dieting or weight loss as ways to resemble admired television characters and linked thinness with opportunity or success. Quantitative change and qualitative meaning converge on a plausible cultural-learning influence.

Reichel et al. tested whether people with anorexia nervosa show an implicit appetitive response to extremely emaciated body images even when self-report does not reveal it.

Thirty-six adolescents/young adults with anorexia and 36 controls viewed images, including extremely emaciated bodies drawn from pro-anorexia sites. Candidate images were reduced from about 8,000; 36 were rated by a 100-person pilot and 16 selected. Acoustic probes elicited an eye-blink startle response measured physiologically, while participants also gave subjective ratings.

The anorexia group showed startle inhibition—interpreted as appetitive responding—to the extremely emaciated images, whereas controls showed startle potentiation, an aversive response. The groups did not show the same difference in subjective ratings. This divergence suggests implicit and reported emotional processing can differ.

Clinical methods must separate treatment effects from alternative explanations while protecting participants whose symptoms may affect risk, consent or withdrawal.

A sound drug RCT pre-registers outcomes, obtains valid consent, records a baseline, randomly allocates through an independent process, standardises dose/contact, monitors adverse events and analyses all allocated participants where possible.

A published research report separates the question, procedure, evidence and interpretation so readers can audit how the conclusion was reached.

Before publication, editors ask knowledgeable independent reviewers to judge contribution, methods, analysis, ethics, clarity and fit with the journal. Reviewers identify specific problems and recommend accept, revise or reject; authors respond and editors decide. Peer review can catch error and improve transparency.

HCPC standards protect the public by setting threshold proficiency and ethical expectations for registered practitioner psychologists.

Practitioners must meet profession-specific proficiency standards to register and remain within the scope for which they are competent. The conduct, performance and ethics standards guide behaviour and are used when concerns are raised. Registration lets the public check professional status; failure to meet standards can trigger fitness-to-practise processes.

Clinical data analysis begins with the research question and measurement level, then separates a sample description from an inferential decision.

For CBT sessions attended and number of anxious episodes, Spearman's rank fits because the hypothesis concerns association and both paired variables can be ranked. After calculating the statistic, use sample size, direction, significance level and the correct critical value to decide whether to reject the null.

Clinical evaluation links a concrete method feature to the exact claim that becomes stronger or weaker, then states the bounded conclusion that survives.

The same feature can cut both ways: non-randomised routine CBT studies improve ecological validity but weaken causal control; a scanner offers objective output but interpretation may remain uncertain. Triangulation is strongest when methods address complementary weaknesses.

A content analysis converts words, images or audio from at least two real sources into systematic evidence about attitudes to mental health.

1. Define a focused comparison, such as tabloid versus support-organisation reporting or recent versus historical coverage. 2. Set transparent source criteria, dates and search terms; sample sources without selecting only striking cases. 3. Define mutually clear categories such as dangerousness, blame, recovery, medical explanation, support or neutral description. 4. Pilot a coding manual, then have at least two coders independently code the same material and resolve disagreements. 5. Tally frequencies or percentages and retain short contextual notes. 6. report procedure, results and a discussion of the supported conclusion.

Credibility depends on who created each secondary source, for what audience and purpose, and whether length, format and date are comparable. Public availability does not remove privacy or stigma risk: avoid exposing identifiable vulnerable people, reproduce only necessary material and frame categories without reinforcing harmful labels.