UAS Cognitive Comprehensive File
The UAS Cognitive Comprehensive File (UAS CogCF) is created at the University of Southern California’s Center for Economic and Social Research (CESR) with data collected in the Understanding America Study (UAS).
A series of cognitive and ability tests (listed below) are administered in the UAS every two years. The UAS CogCF includes the scores from all waves of these longitudinal surveys. It also includes respondent and household identifiers, survey completion dates, and a variable indicating response across waves. Detailed information about the file is provided in the UAS Cognitive Comprehensive File Data Description.
The UAS CogCF is updated nightly and can be linked with other UAS surveys, and with the UAS's main Comprehensive File. The current version of the UAS CogCF can be downloaded as a STATA or CSV file (registration required).
Currently, the UAS CogCF contains data from:
- UAS HRS Wave 1 to 5 (UAS20, UAS95, UAS185, UAS396 and UAS530): serial sevens, naming, and--starting with Wave 4--word recall)
- UAS 1, UAS121 and UAS237 Wave 1 to 4: financial literacy, understanding probabilities and numeracy.
- Woodcock-Johnson 1 Wave 1 to 4 (UAS 42, UAS83, UAS292 and UAS483): Number Series cognitive test.
- Woodcock-Johnson 2 Wave 1 to 4 (UAS 43, UAS84, UAS293 and UAS484): Picture Vocabulary cognitive test.
- Woodcock-Johnson 3 Wave 1 to 4 (UAS 44, UAS85, UAS294 and UAS485): Verbal Analogies cognitive test.
- Stop and Go Switch Task cognitive test Wave 1 to 2 (UAS325 and UAS488)
- Figure identification cognitive test Wave 1 to 2 (UAS327 and UAS489)
- Probability of cognitive impairment (PCI) score, a summary cognitive status score used for research (not to be interpreted as a clinical diagnosis)
UAS CogCF - Demographic and Default Variables file
Accompanying the UAS Cognitive Comprehensive File is the UAS CogCF - Demographic and Default Variables file. The Demographic and Default Variables file provides additional data that may be linked with the UAS CogCF using the uasid variable. It includes the timestamps indicating when the respondent started and ended each survey in the UAS CogCF, and the demographic variables from each of the individual component surveys.
The UAS CogCF - Demographic and Default Variables file is updated nightly, and may be downloaded as a STATA or CSV file (registration required). For more detailed information about this file, please refer to the UAS Cognitive Comprehensive File Data Description.
Downloads
The following files and documents are available for download (registration required, where indicated):
- UAS Cognitive Comprehensive File (CogCF): STATA | CSV (registration required)
- UAS CogCF - Demographic and Default Variables: STATA | CSV (registration required)
- UAS Cognitive Comprehensive File (CogCF) Data Description
- UAS Cognitive Tests Documentation
Previous versions of the data files are available on request.
Funding and citation
Funding for the Cognitive Comprehensive Data File has been provided by the United States Social Security Administration, the National Institute on Aging through the grant U01AG054580 “Toward Next Generation Data on Health and Life Changes at Older Ages”, and the Society of Actuaries. For citation please use the following for the different files and documentation:
- UAS Cognitive Comprehensive File. Produced by the USC Dornsife Center for Economic and Social Research, with funding from the National Institute on Aging and the Social Security Administration. Retrieved [RETRIEVAL DATE] from https://uasdata.usc.edu/page/UAS+Cognitive+Comprehensive+File.
- UAS Cognitive Comprehensive File Data Description. Produced by the USC Dornsife Center for Economic and Social Research, with funding from the National Institute on Aging and the Social Security Administration. Retrieved [RETRIEVAL DATE] from https://uasdata.usc.edu/page/UAS+Cognitive+Comprehensive+File.
- UAS CogCF - Demographic and Default Variables. Produced by the USC Dornsife Center for Economic and Social Research, with funding from the National Institute on Aging and the Social Security Administration. Retrieved [RETRIEVAL DATE] from https://uasdata.usc.edu/page/UAS+Cognitive+Comprehensive+File.