Age (Mean ± Std. Deviation)

F

p

20 - 30 (n = 111)

31 - 40 (n = 168)

41 - 50 (n = 98)

50+ (n = 23)

INC

3.84 ± 0.64

3.34 ± 0.61

3.37 ± 0.58

3.57 ± 0.45

17.103

0.000**

IOT

4.04 ± 0.63

3.77 ± 0.58

3.82 ± 0.57

3.88 ± 0.36

5.021

0.002**

WPT

4.15 ± 0.57

3.98 ± 0.46

4.01 ± 0.45

4.20 ± 0.56

3.496

0.016*