RT Article T1 The use of respondent incentives in PIAAC: the field test experiment in Germany JF Methoden, Daten, Analysen VO 8 IS 2 SP 223 OP 242 A1 Martin, Silke 1972- A1 Helmschrott, Susanne A1 Rammstedt, Beatrice 1973- LA English YR 2014 UL https://krimdok.uni-tuebingen.de/Record/1642934097 K1 Incentive K1 Response rate K1 Experiment K1 Sample composition K1 PIAAC