Primary School

Junior High School

Mean

SD

Mean

SD

Wilks’ Lambda

F (1, 254)

Discriminating power

Cohen’s d

Confidence

2.44

.76

2.45

.78

1

.04

.14

.01

Reflective

2.51

1.08

2.52

.99

1

.10

−.02

.01

Monitoring

2.13

.92

2.08

.88

.99

.16

.06

.06

Impulsive

2.27

1.03

2.38

1.10

.99

2.00

−.30

−.11

Personal control

3.02

1.03

2.75

1.08

.98

4.10

.64

.26