Group

n

M

SD

Levene’s test for equality of variances

t-test for equality of means

Effect size

F

Mean difference

Std. error difference

df

t

η²

Extraverted

75

9.39

7.98

3.953^*

14.43

1.429

143.93

10.093^**

.408

Introverted

75

−5.04

9.46