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Table 2 Overall effect size of gender differences in “Liking Mathematics” for fourth and eighth graders

From: Gender, affect, and math: a cross-national meta-analysis of Trends in International Mathematics and Science Study 2015 outcomes

 KESSEτ2Test of Null95% CITest of homogeneity
ZPLowerUpperQdf(Q)P
4th grade
 Fixed48− 0.0650.004 − 16.40.000− 0.07− 0.051596.04470.000
 Random48− 0.0730.0230.024− 3.20.001− 0.11− 0.02   
 KESSEVZPLowerUpperQdf(Q)P
8th grade
 Fixed40− 0.1040.004 − 26.90.000− 0.11− 0.09935.85390.000
 Random40− 0.1060.0190.014− 6.00.000− 0.15− 0.07