{"id":2818,"date":"2026-05-13T00:00:00","date_gmt":"2026-05-12T22:00:00","guid":{"rendered":"https:\/\/humes.pl\/slownik\/capi-interviewing\/"},"modified":"2026-07-21T14:37:31","modified_gmt":"2026-07-21T12:37:31","slug":"capi-interviewing","status":"publish","type":"slownik","link":"https:\/\/humes.pl\/en\/glossary\/capi-interviewing\/","title":{"rendered":"CAPI interviewing"},"content":{"rendered":"<p>CAPI interviewing is a face-to-face survey method in which an interviewer administers a structured questionnaire using a computer, tablet or mobile device. Its main value in market research is the combination of personal respondent contact with digital data capture, questionnaire logic and fieldwork control.<\/p>\n<p>In practical terms, CAPI is used when reliable in-person interviewing is needed, but paper questionnaires would be too slow, error-prone or difficult to manage.<\/p>\n<h2>What is CAPI interviewing?<\/h2>\n<p>CAPI interviewing, or Computer-Assisted Personal Interviewing, is a quantitative data collection method in which a trained interviewer conducts an interview in person and records answers directly in dedicated survey software. A concise computer-assisted personal interview definition is therefore: a face-to-face interview supported by a digital questionnaire that controls routing, answer formats, validation rules and data recording during fieldwork.<\/p>\n<p>The method developed as a digital alternative to PAPI, meaning Paper-and-Pencil Interviewing. In PAPI, responses are collected on paper and later entered into a database. In CAPI interviewing, this intermediate step is removed. The questionnaire is displayed on a device, and the interviewer follows the programmed script, asks questions aloud, shows stimuli when needed and enters responses immediately.<\/p>\n<p>CAPI interviewing is most often used in structured or semi-structured surveys where standardization is important. The method supports:<\/p>\n<ul>\n<li>automatic skip logic and filtering questions based on previous answers,<\/li>\n<li>validation of answers at the moment of collection,<\/li>\n<li>randomisation of response options or concepts,<\/li>\n<li>presentation of visual materials, product concepts, packaging or advertisements,<\/li>\n<li>recording of paradata, such as interview duration or interview location, where legally and ethically permitted,<\/li>\n<li>faster transfer of fieldwork data to researchers and analysts.<\/li>\n<\/ul>\n<p><\/br> <\/p>\n<p>Because the interviewer is physically present, CAPI interviewing can reach respondents who may be less accessible through online panels or self-administered surveys. At the same time, the digital interface improves consistency and reduces many operational risks associated with manual data entry.<\/p>\n<h2>Application of CAPI interviewing in practice<\/h2>\n<p>CAPI interviewing is used when research requires in-person contact, controlled questionnaire administration and high-quality structured data. It is particularly relevant in projects where the respondent experience, the context of the interview or the need to show physical or visual stimuli has a direct impact on data quality.<\/p>\n<p>Typical use cases include:<\/p>\n<ul>\n<li><strong>consumer research in retail and services<\/strong>, for example exit interviews in shopping centres, customer satisfaction surveys in service locations or studies of purchasing decisions close to the point of sale,<\/li>\n<li><strong>product and packaging testing<\/strong>, where respondents evaluate visual concepts, mock-ups or physical samples under interviewer supervision,<\/li>\n<li><strong>public opinion and social research<\/strong>, especially when the target population includes groups with limited access to online surveys,<\/li>\n<li><strong>B2B research<\/strong>, when interviews with business decision-makers require interviewer support, clarification of terminology or controlled presentation of concepts,<\/li>\n<li><strong>usage and attitude studies<\/strong>, where a structured questionnaire must capture behaviors, preferences and barriers in a consistent format.<\/li>\n<\/ul>\n<p><\/br> <\/p>\n<p>For research managers, CAPI interviewing is often selected when the study design requires stronger control over who participates, how the questionnaire is administered and whether the interview is completed according to methodological assumptions. The interviewer can verify screening criteria, explain task instructions and maintain respondent engagement in longer or more demanding questionnaires.<\/p>\n<p>In mixed-methods projects, CAPI interviewing may also be combined with qualitative components. For example, a structured CAPI survey can quantify patterns identified earlier in focus groups or in-depth interviews. It can also be followed by qualitative interviews with selected respondent segments to explain motivations behind survey results. Hume&#8217;s Institute uses this logic in projects where measurable market patterns and explanatory insight are both required.<\/p>\n<h2>CAPI interviewing and related methods<\/h2>\n<p>CAPI interviewing belongs to the broader family of computer-assisted interviewing methods. It is closely related to CAWI, CATI and PAPI, but differs from each of them in the mode of contact, interviewer role and level of fieldwork control.<\/p>\n<p>The main related methods are:<\/p>\n<ul>\n<li><strong>CAWI<\/strong>, or Computer-Assisted Web Interviewing, where respondents complete an online questionnaire by themselves, without an interviewer present,<\/li>\n<li><strong>CATI<\/strong>, or Computer-Assisted Telephone Interviewing, where an interviewer administers the questionnaire by phone using survey software,<\/li>\n<li><strong>PAPI<\/strong>, or Paper-and-Pencil Interviewing, where an interviewer records answers on paper forms,<\/li>\n<li><strong>TAPI<\/strong>, or Tablet-Assisted Personal Interviewing, often treated as a practical form of CAPI using tablets as the fieldwork device.<\/li>\n<\/ul>\n<p><\/br> <\/p>\n<p>The question of when to use CAPI vs CAWI in market research depends on the target group, questionnaire complexity, required level of control and operational constraints. CAWI is efficient when respondents are digitally reachable, the questionnaire is clear enough for self-completion and the project requires fast online fieldwork. CAPI interviewing is more appropriate when the target group is difficult to reach online, when interviewer support is needed, when materials must be shown under controlled conditions or when sample verification in the field is important.<\/p>\n<p>Compared with CATI, CAPI interviewing offers stronger visual and contextual capabilities, because respondents and interviewers meet in person. Compared with PAPI, it improves data quality by reducing manual coding, improving routing accuracy and enabling quicker data transfer. However, CAPI usually requires more fieldwork logistics than CAWI or CATI, including interviewer recruitment, training, supervision and travel planning.<\/p>\n<p>In an integrated research design, CAPI interviewing can be one component of a broader measurement system. It may provide robust field data, while CAWI extends reach among online respondents, CATI supports follow-up interviews and qualitative methods explain the reasons behind measured behaviors.<\/p>\n<h2>Quality controls and limitations of CAPI interviewing<\/h2>\n<p>CAPI interviewing improves many aspects of fieldwork quality, but it does not eliminate the need for methodological discipline. The quality of results depends on questionnaire design, interviewer training, sampling procedures, respondent cooperation and supervision of fieldwork execution.<\/p>\n<p>Important quality controls in CAPI interviewing include:<\/p>\n<ul>\n<li>clear interviewer instructions embedded in the questionnaire script,<\/li>\n<li>logical checks and validation rules preventing impossible or inconsistent answers,<\/li>\n<li>monitoring of interview duration and completion patterns,<\/li>\n<li>verification of screening criteria and quota structure,<\/li>\n<li>fieldwork back-checks or audit procedures,<\/li>\n<li>secure storage and transfer of collected data.<\/li>\n<\/ul>\n<p><\/br> <\/p>\n<p>The main limitations of CAPI interviewing are operational rather than conceptual. It is typically more resource-intensive than online interviewing, especially when respondents are geographically dispersed. Interviewer presence can also influence responses, particularly in sensitive topics, which should be considered when deciding between CAPI, CAWI or another mode.<\/p>\n<p>For this reason, CAPI interviewing should be selected when its advantages clearly support the research objective: access to specific respondent groups, in-person verification, controlled presentation of stimuli, interviewer-assisted completion or higher confidence in fieldwork execution. When these factors are not critical, CAWI or CATI may provide a more efficient alternative. In well-designed market research, the choice of method should follow the business question, the respondent profile and the required standard of evidence.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CAPI interviewing is a face-to-face data collection technique with answers recorded on a mobile device. It is a controlled quantitative measurement carried out in the field.<\/p>\n","protected":false},"template":"","slowa_kluczowe":[],"class_list":["post-2818","slownik","type-slownik","status-publish","hentry"],"acf":[],"_wp_attached_file":null,"_wp_attachment_metadata":null,"wpml_media_processed":null,"_wpml_media_usage_in_posts":null,"_wp_attachment_context":null,"_oembed_35c905c64c03156f243b94f18c4eb80f":null,"_wp_attachment_image_alt":null,"rank_math_description":"Concept definition: CAPI interviewing. Application in market research and methodology. 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