03 · What You Need to Know
Bad Data and Bad-Faith Participation Are Not the Same Thing
Start With the Question Payment Is Supposed to Answer
What did the researcher promise to pay for?
If payment compensates participants for spending time completing a survey in good faith, then the relevant question is whether they meaningfully performed that task. It is not whether every response ultimately survives the researcher's data-cleaning procedure.
A response can be unusable for many reasons that do not imply misconduct. The participant may misunderstand a question, hold an unusual opinion, make an accidental selection, encounter a technical problem, interpret a scale differently from the researcher, or simply generate data that fail a later analytic criterion.
Compensation should therefore be connected to what participant payment was actually intended to compensate for, not retroactively redefined according to whether each observation improves the final dataset.
Data Exclusion and Payment Rejection Are Two Different Decisions
This distinction is fundamental in survey research.
A researcher may have legitimate methodological reasons to exclude a response from analysis. That does not automatically establish that the participant should not be paid.
Exclude from analysis
The response does not satisfy the study's methodological criteria for inclusion in the analytic dataset.
Refuse participant payment
The researcher concludes that the participant did not satisfy the prospectively defined conditions required to earn the payment.
The first is principally a data-quality decision. The second affects the participant directly and therefore needs its own ethical and procedural justification.
"Careless" Needs an Operational Definition
Researchers often recognize suspicious data intuitively. Intuition is a poor payment policy.
Possible indicators of low-quality responding include nonsensical open-ended text, impossible response patterns, straight-lining, duplicate participation, failed attention checks, contradictory eligibility information, or completion so rapid that meaningful engagement appears implausible.
Each indicator has limitations. Straight-lining can occur because a participant genuinely gives the same answer to related items. Fast completion does not prove inattention. A failed attention check can result from misunderstanding, language difficulty, accessibility issues, fatigue, or a poorly designed check.
The stronger approach is to define quality criteria prospectively and validate them methodologically rather than making payment depend on a researcher's impression after opening the dataset.
One Failed Attention Check Is Not a Universal Ethical Standard
Attention checks can be useful, but their evidentiary value depends on design.
A transparent instructed-response item, a comprehension check, an inconsistency index, and an obscure "gotcha" question are not methodologically equivalent. Nor is there a universal ethics rule stating that one failed check automatically cancels payment.
If payment consequences are attached to attention checks, researchers should be able to justify why those checks validly indicate failure to perform the compensated task, how many failures matter, whether participants can reasonably understand the requirement, and how accidental errors are handled.
Watch Out
Do not design attention checks primarily as traps that make nonpayment easier. Their scientific purpose should be to assess meaningful engagement or comprehension, and any payment consequences should be proportionate and prospectively defensible.
Platform Rules Can Create Additional Payment Standards
Online participant platforms often have their own rules governing approval and rejection. Those rules are not universal research-ethics standards, but researchers using the platform must follow them.
For example, CloudResearch Connect instructs researchers to use rejection only for confirmed data-quality concerns. Its examples include nonsensical or irrelevant open-ended responses, straight-lining, failed attention checks, and clear indications that the participant did not attempt to complete the study as instructed.
The same guidance says researchers should not reject participants for researcher-side problems such as incorrect survey logic, technical errors, incorrect survey links, or removal for reasons unrelated to participant performance. Participants who made a legitimate effort should be approved and paid when the problem originated with the researcher.
That is a platform-specific rule, not a general rule that automatically applies to every survey. It nevertheless illustrates an ethically useful distinction between participant performance and researcher-side failure.
Researcher Error Should Not Become Participant Nonpayment
Suppose a survey contains a broken branch that sends participants to contradictory questions. Or the survey crashes after thirty minutes. Or an attention check is coded incorrectly.
The participant may produce incomplete or apparently inconsistent data, but the researcher created the problem.
Refusing payment in such circumstances shifts the cost of research design or technical failure onto the participant. Platform policies may expressly prohibit this, as CloudResearch Connect does for several researcher-side errors.
Even outside a platform, the broader fairness issue remains.
Unusual Responses Are Not Necessarily Careless Responses
Researchers should be particularly cautious when a response looks implausible because it conflicts with expectations.
A participant may genuinely select the lowest response on every item. Someone may report an unusual combination of demographic characteristics. A respondent may strongly disagree with every statement in a scale. An open-ended answer may be terse rather than elaborate.
Data cleaning should not become a process of paying only participants whose responses look psychologically plausible to the researcher.
Payment criteria should therefore focus on evidence of task performance rather than whether responses conform to anticipated distributions, theoretical expectations, or desirable findings.
Unusable for Analysis Does Not Necessarily Mean the Participant Failed
A response may be excluded because of a preregistered statistical criterion, missingness threshold, failed manipulation check, duplicate IP address, implausible completion time, or another methodological rule.
Some of those criteria may also provide evidence that the participant did not meaningfully complete the task. Others do not.
For example, failing a manipulation check can mean the experimental manipulation did not work for that participant. It does not necessarily mean the participant failed to follow instructions. Likewise, a response can become unusable because the researcher's measurement instrument performs poorly.
Researchers should therefore resist treating every analytic exclusion criterion as an automatic payment-exclusion criterion.
Prospective Rules Matter More Than Post Hoc Frustration
OHRP recommends that participants receive a detailed account of payment terms, including circumstances in which partial or no payment may occur.
This principle is especially valuable in online surveys because researchers can otherwise create payment criteria after seeing responses.
If researchers intend to condition payment on completing required questions, passing legitimate eligibility verification, avoiding duplicate participation, or satisfying particular quality criteria, those conditions should be considered during study design and ethics review where applicable.
Deliberate Deception Is Different From Ordinary Response Error
SACHRP recognizes that incentive payments can sometimes motivate individuals to make false statements about eligibility or other aspects of participation. Such deception can create safety and research-integrity concerns. It recommends reasonable measures to reduce the opportunity for deception, including objective verification where appropriate.
A participant deliberately fabricating eligibility information to obtain payment therefore presents a different case from someone who misunderstands one survey item.
Even then, payment consequences should follow the prospectively defined protocol, institutional requirements, and platform rules rather than becoming an improvised punishment.
Quality Control Should Be Designed Before Data Collection
The best time to decide what counts as inadequate survey participation is before the first response arrives.
Define
Specify what meaningful survey completion requires.
Measure
Choose defensible indicators of engagement, eligibility, duplicate participation, or other relevant quality concerns.
Predefine
Establish how those indicators affect analysis and, separately, payment.
Disclose
Describe relevant payment conditions to participants and the ethics committee where required.
Apply consistently
Use the same rules regardless of whether a participant's substantive answers support or frustrate the research hypothesis.
That final step is important. Data quality criteria should not mysteriously become stricter after an inconvenient result appears. Reviewer 2 may already do enough of that for everyone.