Contribution to the handbook
Priority · Assessed 2026-10-28
Recruitment and sample limits affect whether study findings can inform citizen-facing design and identify what representation and transfer tests are needed. The evidence distinguishes online convenience samples from a separately stratified assembly sample; it reports the assembly’s intended demographic coverage and similar outcomes, but does not establish that either sample represents all relevant citizens or settings.
Does this challenge the goal?
In-scope gap
Recruitment and representativeness bear on whose views inform citizen-serving deliberation and on how evidence should be tested, within the existing goal. The question does not contest that goal or its beneficiary boundary.
The evidence distinguishes convenience recruitment from an assembly sample intended to reflect demographic characteristics, but does not fully establish realized representativeness.
Why this category?
- consequential risks or limits
- testing
These records share a source root and are not independent evidence. The supplied evidence lacks full demographic comparisons and response rates, and UK results do not establish generalization elsewhere.
This is an AI assessment of contribution to the goal, separate from whether the question has an answer.
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Read the exploration goalDescribe the recruitment approaches for the main participants and the separate citizens’ assembly sample.
What we can say so far
The main participants were adult UK residents recruited through online convenience sampling, including via a crowdsourcing platform. A separate virtual citizens’ assembly recruited UK participants using randomized, stratified sampling; the sample was designed to reflect the population across demographic characteristics. The supplied material describes the assembly’s intended sampling design, but does not establish that the realized sample was representative.
What remains open
- The supplied material does not provide response rates or demographic comparisons needed to assess how representative the realized samples were.
Conditions and limits
- These are reported descriptions of the study’s recruitment methods, not independent verification.
- The assembly’s stratified design was intended to produce demographic representation; the supplied evidence does not establish achieved representativeness.
Objections to consider
- The evidence says the assembly’s sampling design was intended to produce demographic representation but supplies no response rates or demographic comparisons to establish whether the realized sample achieved it.
Evidence and related ideas
Supporting evidence, qualifications and context play different roles in this answer.
qualifies
Two kinds of UK sample Most participants were adult UK residents recruited through online convenience sampling. A separate virtual citizens’ assembly used a UK sample selected through randomized, stratified sampling intended to produce demographic representation.
Describes online convenience recruitment for the main sample and randomized, stratified selection for the assembly, while cautioning that intended representation does not establish achieved representativeness.
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Assess what can and cannot be concluded about each sample’s representativeness, distinguishing intended demographic representation from demonstrated representation.
What we can say so far
The main experimental cohorts were adult UK residents recruited through online convenience sampling. A separate virtual citizens’ assembly used randomized, stratified recruitment intended to reflect UK residents across demographic dimensions such as age, gender, ethnicity, socioeconomic status or income, and region. The authors and summaries describe that assembly sample as demographically representative, and one report notes demographic adjustment checks. These descriptions and checks do not, on the supplied evidence, demonstrate that the realized sample matched the population: response rates and detailed comparisons of the recruited sample with the target population are not provided. Thus, intended demographic representation is supported for the assembly, but demonstrated representativeness is not established here; the convenience cohorts should not be treated as representative merely because they were large. The conclusions are limited to these UK samples, and wider generalization remains uncertain.
What remains open
- No response rates or detailed comparisons of the realized assembly sample with the UK population are supplied.
- No full demographic profile or sufficient recruitment detail is supplied to assess the degree of representation achieved in either sample.
- Representativeness of the UK samples does not establish applicability to other populations or settings.
Conditions and limits
- The sample descriptions and representativeness labels are reported through interpretations of the article; supplementary materials are not included.
- The assembly’s intended demographic dimensions vary slightly across the supplied summaries (for example, socioeconomic status or income, and gender or gender identity).
- One source reports demographic-adjustment checks, but the underlying data and details are not supplied; this does not establish population representativeness or generalization beyond the UK.
- The supplied summaries report 5,734 experimental participants and separately give 2,473 training plus 2,673 evaluation participants; their relationship is not explained, so they should not be treated as a reconciled breakdown.
Objections to consider
- The supplied account expressly lacks the full demographic profile and does not establish how closely the realized sample matched the population. This prevents verification of achieved representativeness.
- The source reports that applicability beyond the UK is unknown. That limitation prevents extending any representativeness conclusion to other populations.
- The source says wider generalization seems likely, but also says the UK checks do not establish results in other countries or settings. The supplied material does not resolve that uncertainty.