Disciplinary and Interdisciplinary Science Education Research

Table 4 Effect Size of Mantel-Haenszel Test (ETS Delta scale)

From: Revalidating a measurement instrument of spatial thinking ability for junior and high school students

Item	Alpha MH	Delta MH
STAT1G	1.0943	-0.2117 A
STAT2G	1.3045	-0.6247 A
STAT3G	0.9705	0.0703 A
STAT4G	1.2910	-0.6003 A
STAT5G	0.9354	0.1569 A
STAT6G	0.8137	0.4846 A
STAT7G	0.8182	0.4715 A
STAT8G	0.9955	0.0105 A
STAT9G	1.1051	-0.2349 A
STAT10G	1.0073	-0.0171 A
STAT11G	0.8157	0.4786 A
STAT12G	1.0375	-0.0866 A
STAT13G	0.9304	0.1696 A
STAT14G	0.9848	0.0361 A
STAT15G	1.3057	-0.6268 A
STAT16G	0.7664	0.6251 A

Note: ‘A’: negligible effect, ‘B’: moderate effect, ‘C’: large effect

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