Table 2 Bivariate correlation matrix for variables

1

Stressor

2

Optimism

− .24**

3

Sleep pattern

− .10

.05

4

Sleep Irregularity

.03

− .03

.38**

5

Commitment

.21**

− .04

.28**

.47**

6

Appraisal of influence

.07

.03

− .03

.00

.14**

7

Appraisal of threat

.12*

− .16**

.27**

.48**

.62**

.12*

8

Controllability

− .08

.18**

− .30**

− .43**

− .26**

.12*

− .31**

9

Depression

.35**

− .38**

.12*

.13*

.26**

.12*

.30**

− .13*

10

Anxiety

.31**

− .16**

.08

.07

.25**

.06

.10

− .08

.73**