First Round of PIAAC Data Collection in the United States
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
Second Round of PIAAC Data Collection in the United States
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.
The second round also included the U.S. PIAAC Prison Study, which was conducted from February through June 2014 to a sample of 1,300 adult inmates (ages 16–74) detained in federal and state prisons in the United States. The direct assessments of literacy, numeracy, and problem solving in technology-rich environments administered to adult inmates were the same as those administered to the U.S. PIAAC household participants. However, the household background questionnaire was modified and tailored specifically to address the experiences and needs of this subgroup. For example, the prison background questionnaire included items related to activities in prison, such as participation in academic programs and ESL classes; experiences with prison jobs; and involvement in nonacademic programs, such as employment readiness classes.
Publications based on the second round of U.S. data collection