ROZLOSUJĘ KARTY PREZENTOWE DO EMPIKA O WARTOŚCI 50zł!
Jestem studentem V roku psychologii. Proszę was o pomoc w badaniu.
Badanie potrwa około 15 minut i jest całkowicie anonimowe.
Wśród osób, które wezmą udział w badaniu rozlosuję karty prezentowe do Matrasa lub Empika o wartości 50zł.
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