The Program for the International Assessment of Adult Competencies (PIAAC) is a large-scale international study of working-age adults (ages 16–65) that assesses adult skills in three domains (literacy, numeracy, and digital problem solving) and collects information on adults' education, work experience, and other background characteristics.
Three data collection efforts are described in this web-based technical report: the U.S. PIAAC 2012 Main Study (5,010 respondents), the U.S. PIAAC 2014 National Supplement (3,660 respondents), and the PIAAC 2017 (3,660 respondents).
The technical report is designed to provide researchers with an overview of the design and implementation of PIAAC in the United States. The report includes detailed information on sample design, survey instruments, the data collection procedures, data quality, weighting, scaling, and data analysis. In addition, a user guide is included that provides information to help support analysis of the data.
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