The U.S. PIAAC National Supplement household study, conducted from August 2013 through April 2014, was administered to a sample of 3,600 U.S. adults using the same procedures and instruments as the PIAAC Main Study. The supplemental household study increases the sample size of key U.S. subgroups: unemployed adults (ages 16–65), young adults (ages 16–34), and older adults (ages 66–74). The study will enhance and expand on the information available for these subgroups that are of high interest to policymakers, businesses, and educators.
The U.S. PIAAC Prison Study, a part of the National Supplement, was administered from February through June 2014 to a sample of 1,200 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 Main Study and National Supplement 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.
The publications that are scheduled to be released in conjunction with the National Supplement are as follows: