Humanities Indicators
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V-1c: Average Score on PIAAC Literacy Proficiency Assessment, by Skill Level of Occupation, United States Compared to International Average, 2011/2012*

* “PIAAC” stands for the OECD’s Programme for the International Assessment of Adult Competencies. Skilled occupations include legislators, senior officials and managers, professionals, technicians, and associate professionals. Semiskilled white-collar occupations include clerks, service workers, and shop and market sales workers. Semiskilled blue-collar occupations include skilled agricultural and fishery workers, craft and related trades workers, plant and machine operators, and assemblers. Elementary occupations include, but are not limited to, laborers.

** The adjusted difference is based on a regression model and takes account of differences associated with the following variables: age, gender, education, immigration, language, and socioeconomic background. The adjusted differences are statistically significant at the .05 level.

Source: Organisation for Economic Co-operation and Development (OECD), OECD Skills Outlook 2013: First Results from the Survey of Adult Skills (Paris: OECD Publishing, 2013), Table A3.19.

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