2 ms·
http://www.sas.upenn.edu/~duckwort/images/12-item%20Grit%20Scale.pdf http://www.sas.upenn.edu/~duckwort/images/12-item%20Grit%20S...
by wpeterson 16y ago
http://www.sas.upenn.edu/~duckwort/images/12-item%20Grit%20Scale.pdf http://www.sas.upenn.edu/~duckwort/images/12-item%20Grit%20S...