Table 3 Spearman’s rank-order correlation

.094*

.248*

.211*

.266*

Sex

boys

.072

.214*

.198*

.200*

girls

.109*

.239*

.201*

.332*

Age

young group

.063

.244

.274*

.242

old group

.102*

.254*

.208*

.275*

SES

low

-.015

.416*

.371*

.269*

middle

.075

.228*

.115*

.301*

high

.184*

.194*

.224*

.234*