Unit quiz: Describing experience, measuring it, and revising the categories

Check understanding, separately from reading

5 questions · 80% to pass · no timer. This quiz checks the lessons in this unit. These authored questions assess recognition and application of the taught distinctions, not professional qualification. You may review the lessons and retry. Repeat attempts reuse the question bank; a remembered answer is not proof of transfer to a new situation.

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Question 1

A fictional supervisor reads a first-assessment note that says: 'Patient reports feeling detached; endorses low mood; denies plans. Impression: depersonalisation.' The interview transcript shows she said 'my arms move before I decide to move them, and I watch it happen as if it were a video of someone else'. Using lesson 71's method, what is the strongest criticism of the note?It has replaced a specific description of the mode in which her experience is given, actions experienced as happening before her decision and as observed rather than lived, with a category term, and it does not preserve her wording, so a reader cannot check whether the experience was actually of that kind.It is too brief, because a proper note should record the patient's full narrative verbatim before any technical term is used.

Question 2

A fictional research meeting discusses a proposal to screen all first-episode referrals with a self-disorder interview, on the grounds that the construct aggregates in the schizophrenia spectrum and predicted transition in an ultra-high-risk cohort. A statistician asks what would be needed before it could guide a service. Which answer is best supported by the cited literature?Nothing further, because the construct has demonstrated internal consistency, a single factor and a statistically significant predictive model, which together establish that the instrument measures the vulnerability directly.A threshold validated in a comparable population with the outcome base rate and the proportions of people above and below it who later receive the diagnosis, plus evidence that the assessment adds information beyond a standard clinical interview.

Question 3

A fictional service compares mean depression scores across two language versions of the same scale and announces that speakers of language B are more distressed, because their mean is two points higher. A colleague asks what would make that inference safe. What does lesson 73 require?Evidence that the scale is measurement-invariant across the two language versions; that items function equivalently at equal underlying severity, before the mean difference is interpreted as a difference in distress; a cross-group mean comparison is uninterpretable until item functioning has been tested.A test-retest reliability coefficient above 0.8 in each language version, since a reliable scale gives a trustworthy comparison.

Question 4

A fictional committee is asked to decide whether to adopt a proposed refinement of an existing diagnosis. The evidence presented is that the refined criteria identify a more homogeneous group in the authors' sample, and that kappa agreement between raters using the refinement was 0.71. Which is the missing element a revising body would expect?A larger reliability study, because kappa of 0.71 falls below the threshold traditionally treated as good agreement and must first be raised above 0.8.A comparison with the incumbent criteria under validators agreed in advance, for example course of illness, family aggregation or treatment response, showing that the refinement performs better, since agreement and internal homogeneity are not evidence that the category picks out something more coherent.

Question 5

A fictional clinician reads two summaries of the same intervention: a 2011 review reporting a moderate pooled effect, and a 2019 update of the same literature reporting a smaller effect, noting that the earlier pooled estimate included several trials that had not been prospectively registered. What is the most defensible interpretation, and what would she look for next?The shrinkage is the expected consequence of a literature in which some trials were not verifiably pre-specified, so the earlier estimate was probably inflated; she should check whether the update accounted for missing or selectively reported results and whether the underlying trials were registered prospectively.The intervention's effect has probably declined over time in the population, since pooled effects from later reviews are generally lower than earlier ones for biological or social reasons.

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