TY - JOUR A1 - Jabłońska, Magdalena A1 - Bedyńska, Sylwia A1 - Gradowski, Łukasz A1 - Sędek, Grzegorz PB - Committee of Psychology PAS PB - Warsaw School of Social Sciences and Humanities L1 - http://www.czasopisma.pan.pl/Content/101008/PDF-MASTER/SP%202-16%20ANG%205Jab%C5%82o%C5%84ska,Bedy%C5%84ska,Gradowski,S%C4%99dek.pdf L2 - http://www.czasopisma.pan.pl/Content/101008 PY - 2017 IS - No 2 T1 - PREDICTORS OF INSTRUMENTAL MOTIVATIONFOR MATHEMATICS IN PISA 2012. THE ROLE OF GENDER,SELF-CONCEPT, HELPLESSNESS, NEGATIVE EMOTIONS,WORRIES AND INTRINSIC MOTIVATION UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/101008 T2 - Psychological Studies ER -