Table 1
Cronbach’s alphas for the IUS, BDI-II, STAI, STAI Trait and STAI State (N = 228)
| Variable | Cronbach alphas |
|---|---|
| IUS | 0,96 |
| BDI-II | 0,81 |
| STAI | 0,87 |
| STAI Trait | 0,81 |
| STAI State | 0,92 |
[i] Note: IUS: Intolerance of Uncertainty Scale; BDI-II: Beck Depression Inventory II; STAI: State-Trait Anxiety Inventory; STAI Trait: State-Trait Anxiety Inventory Trait Subscale; STAI State: State-Trait Anxiety Inventory Tolerance–Intolerance of Ambiguity Scale State Subscale.
Table 2
Correlations among IUS, BDI-II, STAI Trait and STAI State (N = 228)
| Variable | IUS | BDI-II | STAI Trait | STAI State |
|---|---|---|---|---|
| IUS | .31** | .71** | .52** | |
| BDI-II | .19* | .08 | ||
| STAI Trait | .63** | |||
| STAI State |
[i] Note: IUS: Intolerance of Uncertainty Scale; BDI-II: Beck Depression Inventory II; STAI Trait: State-Trait Anxiety Inventory Trait Subscale; STAI State: State-Trait Anxiety Inventory Tolerance–Intolerance of Ambiguity Scale State Subscale.
Gender has been partialled out of all correlations; *p < .01; **p < .001.
Table 3
Mean Intolerance of Uncertainty Scale scores of different age groups
| Age | IUS-total |
|---|---|
| 18 | 68,00 |
| 19 | 65,81 |
| 20 | 68,09 |
| 21 | 67,77 |
| 22 | 69,13 |
| 23 | 67,57 |
| 24 | 67,37 |
| 25 | 66,86 |
| 26 | 68,00 |
| 27 | 62,00 |
Table 4
Promax-Rotated Principal Factor Standardized Regression Coefficients and Final Communality Estimates (h2) of the IUS (n = 228)
| Item | Factor 1 | Factor 2 | h2 |
|---|---|---|---|
| Uncertainty stops me from having a firm opinion. | .23 | .78 | .88 |
| Being uncertain means that a person is disorganized. | .07 | .89 | .88 |
| Uncertainty makes life intolerable. | .32 | .72 | .90 |
| Uncertainty keeps me from living a full life. | .55 | .37 | .55 |
| When it’s time to act, uncertainty paralyses me. | .55 | .33 | .63 |
| Being uncertain means that I am not first rate. | -.01 | .92 | .86 |
| When I am uncertain, I can’t go forward. | .47 | .32 | .52 |
| When I am uncertain I can’t function very well. | .46 | .38 | .57 |
| Unlike me, others always seem to know where they are going with their lives. | .54 | .34 | .64 |
| Uncertainty makes me vulnerable, unhappy, or sad. | .29 | .52 | .54 |
| The smallest doubt can stop me from acting. | .11 | .76 | .69 |
| Being uncertain means that I lack confidence. | -.02 | .79 | .60 |
| I think it’s unfair that other people seem sure about their future. | -.46 | .93 | .55 |
| Uncertainty keeps me from sleeping soundly. | -.05 | .59 | .33 |
| I must get away from all uncertain situations. | -.18 | .83 | .53 |
| It’s unfair not having any guarantees in life | .63 | .10 | .49 |
| My mind can’t be relaxed if I don’t know what will happen tomorrow. | .59 | .46 | .91 |
| Uncertainty makes me uneasy, anxious, or stressed. | .79 | -.14 | .51 |
| Unforeseen events upset me greatly. | .65 | .07 | .49 |
| It frustrates me not having all the information I need. | .74 | -.33 | .83 |
| One should always look ahead so as to avoid surprises. | .59 | .22 | .56 |
| A small unforeseen event can spoil everything, even with the best of planning. | .67 | .06 | .49 |
| I always want to know what the future has in store for me. | .58 | .19 | .49 |
| I can’t stand being taken by surprise. | .84 | -.02 | .69 |
| I should be able to organize everything in advance. | .71 | .07 | .57 |
| The ambiguities in life stress me. | .79 | -.18 | .49 |
| I can’t stand being undecided about my future. | .91 | -.49 | .83 |
| Eigenvalues following rotation | 12.29 | 11.49 |