A low irrational belief group (N = 48)

A high irrational belief group (N = 47)

Pretest

Posttest

Follow-Up

Pretest

Posttest

Follow-Up

M

SD

M

SD

M

SD

M

SD

M

SD

M

SD

IBTN

The total of an irrational belief

35.22

1.86

33.67

4.09

35.78

6.59n.s

42.50

4.21

39.00

5.76

38.88

4.42n.s

Problem avoidance

9.78

2.54

10.44

2.24

10.56

2.88n.s

13.13

3.31

13.00

3.02

12.38

3.38n.s

Helplessness

12.00

1.87

9.56

1.88

10.78

2.54^*

13.88

2.90

12.13

2.42

12.13

2.70^#

Dependence

13.44

1.59

13.67

2.35

13.44

2.46n.s

15.50

2.14

13.50

2.88

14.38

1.85n.s