Hits 1-2 within 2 documents
The PIAAC longitudinal study in Germany: rationale and design [journal article]
Source: Large-scale Assessments in Education, 5 (2017). p.11
Are Readability Formulas Valid Tools for Assessing Survey Question Difficulty? [journal article]
Source: Sociological Methods & Research, 43 (2014) 4. p.677-698