Math Self-Assessment, but Not Negative Feelings, Predicts Mathematics Performance of Elementary School Children

Table 1

Descriptive data of TA and MD groups.

	TA		MD
𝑁	171		36		𝑥^2	𝑑𝑓	𝑃	𝑤
Sex (%male)	42.1		52.8		1.38	1	0.241	0.006
	Mean	SD	Mean	SD	𝑡	𝑑𝑓	𝑃	𝑑
Age (years)	9.5	1.14	9.28	1.27	1.05	205	0.293	0.190
Grade	3.39	1.15	3.08	1.05	1.45	205	0.148	0.270
Raven 𝑧-score	0.69	0.70	0.28	0.58	3.29	205	0.001	0.604
TDE arithmetic z-score	0.53	0.76	−0.90	0.47	14.66	79.7	<.001	2.690
TDE spelling 𝑧-score	0.67	0.56	0.05	0.58	5.99	205	<.001	1.100

TA: typically achieving; MD: mathematical difficulties; TDE: Brazilian school achievement test.