%0 Journal Article %T Fixed is not the opposite of growth: Item keying matters for measuring mindsets %A Gruning, David J. %A Rammstedt, Beatrice %A Lechner, Clemens M. %D 2024 %R 10.1007/s11218-023-09866-z %P 2111-2127 %J Social Psychology of Education %V 27 %2 ISSN: 1381-2890