Programme for the International Assessment of Adult Competencies (PIAAC), log files

Resource Type
Dataset : Survey and aggregate data
  • OECD
Publication Date
  • OECD - Organisation for Economic Co-operation and Development (Researcher)
  • ETS - Educational Testing Service (Researcher)
  • GESIS - Leibniz-Institute for the Social Sciences (Researcher)
  • DIPF - German Institute for International Educational Research (Researcher)
  • cApStAn - Linguistic Quality Control (Researcher)
  • ROA - Research Centre for Education and the Labour Market (Researcher)
  • IEA DPC (Data Processing and research Center) - International Association for the Evaluation of Educational Achievement (Researcher)
  • Westat (Researcher)
  • Public Research Center Henri Tudor (Researcher)
  • Austria: Statistics AustriaBelgium: Gfk BelgiumDenmark: The Danish National Centre for Social Research (SFI)Estonia: Statistics EstoniaFinland: Statistics FinlandFrance: National Institute of Statistics and Economic Studies (INSEE)Germany: TNS Infratest S (Data Collector)
  • GESIS (Distributor)
  • GESIS (Hosting Institution)
  • Abstract

    Objective: The PIAAC 2012 study was the first fully computer-based large scale assessment in education. During the assessment, user interactions were logged automatically. This means that most of the users’ actions within the assessment tool were recorded and stored with time stamps in separate files called log files. The log files contain paradata for each participant in the domains literacy, numeracy, and problem solving in technology-rich environments. The availability of these log files offers new opportunities to researchers, for instance to reproduce test-taking behavior of individuals and to better understand test-taking behavior. Method: PIAAC 2012 was conducted August 2011-November 2012 among a representative international sample of around 166000 adults within 24 different countries. The following dataset includes the log files from 17 countries. Each country was allowed to choose their own sampling technique as long as the technique applies full selection probability methods to select a representative sample from the PIAAC target population. The countries were able to oversample particular subgroups of the target population. Persons aged 55-65 and recent immigrants were oversampled in Denmark and persons aged 19-26 were oversampled in Poland. The administration of the background questionnaires was conducted face-to-face using computer assisted personal interviewing (CAPI). After the questionnaire, the respondent completed a computer-based or paper-based cognitive under the supervision of the interviewer in one or two of the following competence domains: literacy, numeracy and problem solving in technology-rich environments. Variables: With the help of the PIAAC LogDataAnalyzer you can generate a data set. The Log Data Extraction software is a self-contained system that manages activities like data extraction, data cleaning, and visualization of OECD-PIAAC 2012 assessment log data files. It serves as a basis for data related analysis tasks using the tool itself or by exporting the cleaned data to external tools like statistics packages. You can generate the following Variables: Number of Using Cancel Button, Number of Using Help Menu, Time on Task, Time Till the First Interaction, Final Response, Number of Switching Environment, Sequence of Switching Environment, Number of Highlight Events, Time Since Last Answer Interaction, Number of Created Emails, Sequence of Viewed Emails, Number of Different Email Views, Number of Revisited Emails, Number of Email Views, Sequence of Visited Webpages, Time-Sequence of Spent Time on Webpages, Number of Different Page Visits, Number of Page Visits, Number of Page Revisits.
Temporal Coverage
  • 2011-08-01 / 2012-03-31
  • 2011-08-19 / 2012-03-31
    Belgium (Flanders)
  • 2011-08-28 / 2012-04-17
  • 2011-08-01 / 2012-04-30
  • 2011-08-30 / 2012-04-05
  • 2012-09-07 / 2012-11-24
  • 2011-08-01 / 2012-03-31
  • 2011-08-01 / 2012-03-31
  • 2011-09-01 / 2012-04-15
  • 2011-08-22 / 2012-05-11
  • 2011-08-17 / 2012-04-30
  • 2011-08-01 / 2012-03-31
  • 2011-10-27 / 2012-04-24
  • 2011-09-02 / 2012-04-30
  • 2011-08-01 / 2012-03-31
    United Kingdom (England and Northern Ireland)
  • 2011-08-25 / 2012-04-03
    United States
  • 2011-09-26 / 2012-04-24
    Korea (Data collection suspended between 23 December 2011 and 12 March 2012)
Geographic Coverage
  • Austria (AT)
  • Belgium (BE)
    The geographic coverage comprises only the region Flanders.
  • Denmark (DK)
  • Estonia (EE)
  • Finland (FI)
  • France (FR)
  • Germany (DE)
  • Ireland (IE)
  • Italy (IT)
  • Netherlands (NL)
  • Norway (NO)
  • Poland (PL)
  • Slovakia (SK)
  • Spain (ES)
  • United Kingdom (GB)
    The geographic coverage comprises only England and Northern Ireland.
  • United States (US)
  • Korea, Republic of (KR)
Sampled Universe
All adults in private households between 16 and 65 years of age that resided in the country during the time of data collection, regardless of citizenship, nationality or language.
Probability: Systematic random; Probability: Stratified; Probability: Multistage; Sampling Procedure Comment: Austria: Systematic Random Sample Design Denmark, Netherlands, Norway: Stratified Sample Design Belgium, Estonia, Finland: Systematic Random Stratified Sample Design France, Germany, Ireland, Italy, Korea, Poland, Slovakia, Spain, United Kingdom, United States: Multistage Sample Design Groups oversampled: Persons aged 55-65 and recent immigrants (Denmark), Persons aged 19-26 (Poland)
Time Dimension
  • Cross-section
Collection Mode
  • Educational measurements and tests
  • Educational measurements and tests
Survey unit: adults; teenagers### International PIAAC 2012 Public-Use-Files for all PIAAC countries can be downloaded from the OECD website: (available for SPSS, SAS, and STATA). For more Information and Materials see OECD website and FDZ PIAAC website.
A - Data and documents are released for academic research and teaching.
All metadata from GESIS DBK are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, GESIS requests that you actively acknowledge and give attribution to all metadata sources, such as the data providers and any data aggregators, including GESIS. For further information see
Alternative Identifiers
  • ZA6712 (Type: ZA-No.)
  • PIAAC (Type: FDZ)
  • 1 (Type: VerbundFDB)
  • Is new version of
    DOI: 10.4232/1.12569
  • OECD. (2013). OECD skills outlook 2013: First results from the Survey of Adult Skills. Paris: OECD Publishing.
  • OECD. (2016). Technical report of the Survey of Adult Skills (PIAAC) (Second Edition). Paris: OECD.
  • OECD. (2016). The Survey of Adult Skills – Reader´s companion, Second Edition. Paris: OECD Publishing.

Update Metadata: 2021-04-07 | Issue Number: 22 | Registration Date: 2017-12-22