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U.S. Household Study Data Collection

International
Cycle
U.S.
Round
Years of Data
Collection
Population Sample
Size
Purpose Related Publications
1 1 2012 Ages 16-65 5,000 Assess and compare
the basic skills
and broad range of
competencies of
adults in the
United States
Literacy, Numeracy, and Problem Solving in
Technology-Rich Environments Among U.S. Adults: Results from the Program for the
International Assessment of Adult Competencies 2012
2 2014 Ages 16-74 3,660 Supplement the First
Round sample by
oversampling young adults and
unemployed adults,
and expanding
the sample to
include older adults
(ages 66-74)
Skills of U.S. Unemployed, Young, and Older
Adults in Sharper Focus: Results from the
Program for the International Assessment of Adult Competencies
(PIAAC) 2012/2014: First Look


Analyzing U.S. Young Adults’ Skills
by Student and Employment Status:
Methodology for a New PIAAC Variable
with Initial Results
3 2017 Ages 16-74 3,800 Provide a second point in
time for comparison to
2012/2014 data, and
develop small area
stimates when combined
with the 2012/14 studies.
First Look Report (expected Fall 2019)
Small Area Estimate Results (expected Spring 2020)

First Round of PIAAC Data Collection in the United States

Household data

The first round of data collection in the United States (officially known as the U.S. PIAAC Main Study) was conducted from August 2011 through April 2012 with a nationally representative household sample of 5,000 adults between the ages of 16 and 65.

Publications based on the first round of U.S. data collection

  • U.S. PIAAC First Look report presenting U.S. PIAAC 2012 results on a representative sample of U.S. adults ages 16-65, as well as the international average of adults in countries/regions that participated in the PIAAC 2012 assessment.

Second Round of PIAAC Data Collection in the United States

Household data

The second round of U.S. data collection (officially known as the National Supplement to the Main Study) included a household survey, which was conducted from August 2013 through April 2014. It was administered to a sample of 3,660 U.S. adults in households in order to (a) enhance the U.S. PIAAC dataset by oversampling young adults (ages 16-34) and unemployed adults (ages 16-65), and (b) expand the sample to include older adults (ages 66-74). The expanded national sample (total of about 8,700 adults living in the household) supports more accurate and reliable national estimates for these subgroups and, in the case of older adults, estimates for new groups not represented in the first round of PIAAC.

Publications based on the second round of U.S. data collection

  • An updated U.S. PIAAC First Look report presenting U.S. PIAAC 2012/2014 data and international averages, including information on the enhanced sample of unemployed and young adults (ages 16-34), as well as the new U.S. sample of older adults (ages 66-74).
  • A report on the U.S. prison population presenting data on U.S. prisoners' skill levels in the three PIAAC performance domains (literacy, numeracy, and problem solving) as well as information on their educational and work-related experiences in prisons.
  • A methodology report focusing on the new variable to aid in analyzing skills of U.S. young adults (age 16-34) and key issues facing them.

Third Round of PIAAC Data Collection in the United States

Household data

The third round of U.S. data collection was administered in 2017 to a nationally representative household sample of about 3,800 adults between the ages of 16-74. The combined 2017 and 2012/2014 data supports the calculation of county-level estimates and provides a second point in time to allow for comparisons to the 2012/14 results. The results of the 2017 data collection are expected to be released in Fall 2019 and small area estimation results are expected by Spring 2020.