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How representative are student convenience samples? A study of literacy and numeracy skills in 32 countries
[Zeitschriftenartikel]
Abstract Psychological research, including research into adult reading, is frequently based on convenience samples of undergraduate students. This practice raises concerns about the external validity of many accepted findings. The present study seeks to determine how strong this student sampling bias is in l... mehr
Psychological research, including research into adult reading, is frequently based on convenience samples of undergraduate students. This practice raises concerns about the external validity of many accepted findings. The present study seeks to determine how strong this student sampling bias is in literacy and numeracy research. We use the nationally representative cross-national data from the Programme for the International Assessment of Adult Competencies to quantify skill differences between (i) students and the general population aged 16-65, and (ii) students and age-matched non-students aged 16-25. The median effect size for the comparison (i) of literacy scores across 32 countries was d = .56, and for comparison (ii) d = .55, which exceeds the average effect size in psychological experiments (d = .40). Numeracy comparisons (i) and (ii) showed similarly strong differences. The observed differences indicate that undergraduate students are not representative of the general population nor age-matched non-students.... weniger
Thesaurusschlagwörter
Lesen; Rechnen; Alphabetisierung; Erwachsener; Bildungsniveau; Kompetenz; Student; Grundstudium; Stichprobe; internationaler Vergleich
Klassifikation
Bildungs- und Erziehungssoziologie
Makroebene des Bildungswesens
Freie Schlagwörter
PIAAC
Sprache Dokument
Englisch
Publikationsjahr
2022
Seitenangabe
S. 1-22
Zeitschriftentitel
PLOS ONE, 17 (2022) 7
DOI
https://doi.org/10.1371/journal.pone.0271191
ISSN
1932-6203
Status
Veröffentlichungsversion; begutachtet (peer reviewed)