Wang Jie, Wang Xinyi, Xin Tao
Reliability and validity of simple Chinese version of grit scale for elementary school students
BMC psychology
critiques coefficient alpha estimate scale reliability widespread literature however continuous overuse statistic mathematics education research suggests disconnection theory practice article argues nontechnical way limited usefulness coefficient alpha overuse alternatives estimating scale reliability coefficient alpha gives information degree interrelatedness set items measures construct contrary widely circulated misconceptions mathematics education research high coefficient alpha value mean instrument reliable imply instrument measures single construct coefficient alpha dependable estimate reliability verifiable restrictive conditions expose conditions present steps verification empirical studies discuss alternatives coefficient alpha references nontechnical articles worked examples programming codes available hope exposition influence practices mathematics education researchers regarding estimation scale reliability