Evaluate diagnosis disclosure and consultation style
Distinguish false-positive from false-negative diagnoses, compare directed and sharing consultations, and evaluate Savage and Armstrong’s patient-satisfaction study.
Original StudyForA teaching mapped to Cambridge 9990 Health Psychology sections 3.1.1–3.1.3, 2028–2030 Version 1. Example studies illustrate a topic and are not official Cambridge materials or mark schemes. Do not use these lessons to diagnose or advise a real person.
Before you begin
- This lesson covers Cambridge Psychology 9990 Health Psychology section 3.1.2. Consultation style, satisfaction, comprehension, diagnostic accuracy and health outcomes are distinct.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
A diagnostic test is negative even though the condition is present. Which term describes this result?
What you will learn
- Making and presenting a diagnosis, including disclosure of information and false-positive and false-negative diagnoses
- Doctor-centred (directed) and patient-centred (sharing) consultations
- Savage and Armstrong’s (1990) study of practitioner style and patient satisfaction
- Apply the evidence and evaluate individual and situational explanations, cultural differences, free will and validity
A diagnosis is an evidence-based conclusion that can include uncertainty
A diagnosis draws on a person’s history, reported experience, examination and any relevant investigations. A practitioner communicates the conclusion, the evidence and any uncertainty in terms the patient can understand. Disclosure is not a one-way recital: the patient may have questions, preferences and information that changes the picture.
For a test or diagnostic decision, a false positive means the result indicates a condition that is not present; a false negative means the result misses a condition that is present. Neither label can be interpreted without knowing what was assessed, how the reference standard was set, and the base rate and limits of the method. A screening result is not always a final diagnosis.
Presenting a diagnosis includes explaining what is known, what is not yet known, what options are available and when further review may be needed. Respectful communication does not hide uncertainty or promise certainty where evidence is incomplete. It also does not reduce a person to a label.
Directed and sharing styles differ in who leads the treatment discussion
In a doctor-centred or directed style, the practitioner takes the lead in explaining advice, treatment and prognosis. In a patient-centred or sharing style, the practitioner invites more patient participation in those decisions. Real consultations can include both: explaining a clear safety instruction and asking about a person’s priorities are not mutually exclusive.
A directed approach can give a concise recommendation; a sharing approach can reveal concerns, preferences or barriers that affect whether a plan is acceptable. The useful question is not which style wins for every person, but how communication fits the task, evidence, patient preference and urgency while preserving informed participation.
Savage and Armstrong tested style in one general practice
Savage and Armstrong (1990) compared directing and sharing styles in the treatment, advice and prognosis part of consultations. The report describes 359 randomly selected patients consulting one general practitioner in an inner-London practice; patients were allocated to a style. Four refused and five were excluded. Response was 89 per cent for the immediate assessment and 58 per cent at one week.
The researchers asked patients whether they felt the GP understood their problem, whether the explanation was good, and whether they felt helped, immediately and after a week. Patients receiving the directing style reported significantly higher satisfaction on almost all outcome measures. Differences were particularly clear for physical problems and when a prescription was given. The study did not find a significant difference in the reported categories of longer consultations, advice-only treatment, or psychological or chronic problems.
This is evidence about self-reported satisfaction in a specific consultation context, not proof that directed care is always better, more accurate or healthier. One GP and one practice limit generalisation; response loss by one week may bias later results; and the outcomes were subjective satisfaction and perceived help, not independent diagnostic accuracy or long-term health.
Interpret style as an interaction between the person and situation
The same patient may want a concise recommendation for a familiar minor issue and more discussion about a complex or preference-sensitive decision. The task, seriousness, time, trust, culture, health literacy and previous experiences may all shape what ‘helpful’ communication means. Do not infer a fixed preference from age, culture or diagnosis; ask the person.
A valid application states which part of the consultation changed, who took part, and how the outcome was measured. If a clinic wants to improve communication, it could invite patient preferences, check comprehension and collect both immediate feedback and follow-up outcomes. These measures answer different questions and should not be collapsed into one score.
Diagnosis disclosure and consultation style also involve choice. Clear information enables people to ask questions and express preferences. A practitioner can recommend a course while explaining alternatives and checking whether the patient wants more or less detail; participation does not mean the patient must make every clinical decision alone.
Sources for this lesson
Pause and explain
Which conclusion best fits Savage and Armstrong (1990)?
Worked example
A clinic concludes from Savage and Armstrong (1990) that every patient should receive a directed consultation because it produced higher satisfaction. Evaluate this claim.
Show the worked solution
- Describe the randomised comparison and the single-GP inner-London setting.
- Report the finding as satisfaction ratings, noting the clearer pattern for physical problems and prescriptions.
- Evaluate one-practice generalisability, one-week response loss, context differences and unmeasured health outcomes.
Answer The study supports a bounded conclusion that directing style produced higher reported satisfaction on almost all measures in this practice, particularly for physical problems and prescriptions. It does not establish that every person prefers this style or that it improves diagnostic accuracy or health. Only one GP and one practice took part, and the one-week response rate was 58 per cent. A clinic should ask patients about communication preferences and measure understanding, satisfaction and outcomes separately.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
A test misses a condition that is present. Define the error and name one question needed before interpreting the result.
Give me a hint
Start with what the test indicated and whether the condition was actually present.
Compare my reasoning
- The condition is present, but the test result was negative.
- This is a false-negative result.
- Ask what population and condition the test was evaluated for, and explain that a test result may need clinical interpretation.
It is a false negative because the condition was present but the test failed to identify it. Interpretation depends on the test’s purpose, the person’s context and the evidence used; the word ‘negative’ alone does not settle the diagnosis.
Look for these in your work
- Truth state identified
- Error named correctly
- Interpretation remains contextual
A service cites Savage and Armstrong to require directed consultations for every patient. Evaluate the policy.
Give me a hint
Report the result, then check the outcome measure, sample and situations where the difference was not significant.
Compare my reasoning
- The study randomised consultation style during treatment, advice and prognosis for patients of one GP in one inner-London practice.
- Patients in the directed condition reported higher satisfaction on almost all measures; differences were especially clear for physical problems and prescriptions.
- The single practice, 58 per cent one-week response and lack of health-outcome measurement limit a universal policy claim; ask patients’ preferences and assess comprehension separately.
The result supports considering clear direction in some situations, but not imposing it universally. It measured reported satisfaction in one practice, and one-week response fell to 58 per cent. It did not establish better health or diagnostic accuracy. Patient preference, the task and comprehension should be checked in the service itself.
Look for these in your work
- Design and finding described
- Limitations linked to policy
- Alternative evaluation proposed
A patient wants to know what is certain about a diagnosis but also wants to choose between two reasonable plans. Suggest a communication approach and two outcomes to assess.
Give me a hint
Combine clear professional explanation with an invitation to discuss patient priorities; choose two different measures.
Compare my reasoning
- Explain the evidence, uncertainty and options in plain language, then invite the patient to describe their priorities and ask questions.
- Check comprehension separately, for example by asking the patient to summarise the options and next step.
- Measure patient-reported involvement or satisfaction as one outcome and follow an appropriate health or care outcome separately.
The practitioner can state what is known and uncertain, describe the two options and their relevant consequences, ask which concerns matter to the patient, and agree a next step. A comprehension check and later patient-reported involvement or care outcome are distinct measures. The approach should respect the patient’s preference for the amount of discussion.
Look for these in your work
- Uncertainty disclosed clearly
- Participation invited
- Different outcomes measured separately
Common mistakes
- Mixing up false positives and false negatives
- Treating a screening result as a certain diagnosis
- Claiming that directed consultations are best for every patient and situation
- Calling satisfaction ratings objective evidence of better health or diagnostic accuracy
- Ignoring the one-GP setting and one-week response loss in Savage and Armstrong
- Assuming that patient-centred care means withholding a clear professional recommendation
What can you explain now?
What did Savage and Armstrong measure, and why does their result not show that directing is always the best consultation style?
Compare with the explanation
They measured patients’ reported satisfaction and perceived help immediately and one week after the consultation. The result came from one GP and one practice, differed across some contexts, and did not measure diagnostic accuracy or long-term health.
A bounded conclusion names the sample, the consultation context and the actual outcome instead of extending satisfaction ratings to every patient or outcome.
After trying it yourself, choose your next review. This is your self-assessment.
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Make it stick
Define false positive and false negative, then summarise what Savage and Armstrong measured and one limit on applying their result.
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.