The Interviewer Quality Control Programme (PKJPA) is a Polish industry standard for interviewer quality control in market and social research. It provides a structured framework for verifying whether interviews have been conducted by authorised interviewers, with the intended respondents and in accordance with the research project’s methodological requirements.
For research buyers, PKJPA is an important indicator of how interviewer fieldwork quality is verified by a data collection provider. It helps reduce the risk of fabricated, incomplete, improperly administered or otherwise unreliable interviews entering the research dataset.
What is the Interviewer Quality Control Programme (PKJPA)?
The Interviewer Quality Control Programme, known in Polish as PKJPA, is a sector-specific quality assurance framework developed by OFBOR, the Organisation of Market and Opinion Research Companies. It is currently administered by PTBRiO, the Polish Society of Market and Opinion Researchers. Its purpose is to standardise interviewer quality control processes used by research agencies conducting fieldwork through human interviewers.
PKJPA applies primarily to studies in which data are collected by interviewers, including face-to-face interviews, telephone interviews and, where relevant, other interviewer-mediated modes. The programme addresses the reliability of fieldwork execution rather than the substantive interpretation of results. In other words, it focuses on whether the data collection process was carried out as designed, not on whether a client agrees with the findings.
The central logic of interviewer quality control is verification of the link between the assignment, the interviewer, the respondent and the completed questionnaire. A properly designed control process assesses whether:
- the interview was actually conducted;
- the respondent matched the sampling or recruitment criteria;
- the interviewer followed the required contact and interview procedures;
- the questionnaire was administered in an appropriate manner;
- the interview record is internally credible and consistent with fieldwork documentation;
- identified irregularities are investigated and addressed.
PKJPA should therefore be understood as a Polish industry standard for fieldwork governance. It establishes expectations for control, documentation and accountability in projects where interviewers have a direct influence on the quality of raw research data.
The programme is particularly relevant because interviewer-mediated research involves operational risks that do not occur in the same form in fully self-completed online surveys. These risks may include interviewing an ineligible person, omitting questions, leading respondents, recording answers inaccurately, completing an interview without appropriate contact, or fabricating an interview. Interviewer quality control does not eliminate every possible error, but it creates procedures intended to detect and limit such risks.
Application of interviewer quality control in practice
Interviewer quality control is used by research agencies, fieldwork providers and clients commissioning studies that depend on the quality and authenticity of interviewer-collected data. PKJPA is especially relevant when research outcomes may inform commercial decisions, public policy, communication strategy, customer experience improvements or product development.
In practice, the required level and form of control depend on the research design, target group, interview mode and project risk. A study involving a broad consumer sample has different operational challenges from research among physicians, company executives, procurement managers or users of specialised industrial equipment. Nevertheless, the principle remains the same: data should be traceable to a legitimate and properly conducted respondent interaction.
Examples of projects in which the Interviewer Quality Control Programme may be material include:
- consumer usage and attitude studies conducted through face-to-face or telephone interviews;
- customer satisfaction research based on interviewer-administered surveys;
- B2B studies among decision-makers, specialists and purchasing professionals;
- public opinion research and social research requiring controlled respondent recruitment;
- healthcare research involving regulated professional groups or difficult-to-reach respondents;
- mixed-methods projects where quantitative fieldwork is followed by qualitative interpretation or used for segmentation.
For a client selecting a research supplier, participation in PKJPA or adherence to equivalent documented fieldwork standards can be a relevant procurement criterion. It signals that interviewer quality control is treated as a defined operational responsibility rather than an informal activity left solely to individual field coordinators.
It is also useful to distinguish control from correction. The value of PKJPA lies not only in finding problematic interviews after fieldwork has ended. Effective controls can support earlier detection of systematic issues, such as insufficient interviewer briefing, unclear questionnaire wording, problems in sample management or inadequate supervision of a fieldwork team.
How interviewer fieldwork quality is verified under PKJPA
How interviewer fieldwork quality is verified depends on the mode of data collection and the project protocol. PKJPA provides a framework for organising control activities, while specific procedures should be adapted to the research method, data protection requirements and characteristics of the respondent group.
Interviewer quality control can involve several complementary forms of verification. These methods are not interchangeable, because each identifies different types of error or misconduct. Common control mechanisms include:
- recontacting respondents to confirm that an interview took place and that basic project details are correct;
- checking selected questionnaire responses for plausibility and consistency;
- reviewing interviewer records, contact attempts and fieldwork documentation;
- monitoring interviews where the methodology and consent arrangements permit it;
- analysing patterns in completed questionnaires to identify unusual response behaviour;
- reviewing the work of interviewers whose results differ materially from expected fieldwork patterns.
Verification should be proportionate and independent enough to provide a credible assessment of fieldwork quality. It also needs to respect respondent confidentiality and personal data protection rules. Control activities should not collect more information than necessary, and respondents should receive appropriate information about the processing of their data.
When a control identifies an irregularity, the appropriate response depends on its nature and potential impact. It may involve clarification, additional verification, exclusion of a questionable interview, retraining of an interviewer or a broader review of the relevant fieldwork batch. The key principle is that decisions affecting the dataset should be documented and methodologically justified.
Interviewer Quality Control Programme (PKJPA) and related research methods
The Interviewer Quality Control Programme is part of research quality management, but it is not itself a sampling method, questionnaire design technique or analytical method. PKJPA concerns the controlled execution of interviewer fieldwork. Its role is therefore different from, but connected with, other elements of research methodology.
PKJPA is closely related to quality assurance in quantitative research. In survey projects, reliable estimates depend on multiple conditions: an appropriate target population, a suitable sample, a properly designed questionnaire, consistent data collection and sound data processing. Interviewer quality control primarily supports the data collection stage.
It also differs from quality control in qualitative research. In-depth interviews, focus groups and ethnographic studies require recruitment verification, moderator competence, accurate recording and transparent interpretation. However, their quality assessment is based more strongly on the relevance and depth of evidence than on the standardised validation of individual questionnaire records. Where qualitative projects use recruiters or interviewer-led screening, selected PKJPA principles may still be relevant.
In mixed-methods research, interviewer quality control can protect the quantitative component that is later compared with qualitative findings. For example, if survey data identify a customer segment and qualitative interviews are used to explain its attitudes, unreliable fieldwork in the survey stage may distort the segmentation and weaken subsequent interpretation.
PKJPA should also not be confused with data cleaning. Data cleaning identifies missing values, logical inconsistencies, duplicates or formatting errors in a dataset. Interviewer quality control examines whether the underlying interview and its administration are credible. Both processes are necessary, but they address different sources of risk.
For buyers of market research, the practical distinction is clear: a well-analysed dataset cannot fully compensate for unreliable fieldwork. The Interviewer Quality Control Programme supports confidence that the material entering analysis was collected through controlled and accountable research procedures.