| Subjective sleep and beliefs about sleep in students | Parents – Subjective sleep vulnerability | Parents - Insomnia Severity Index | Parents - Dysfunctional beliefs about sleep | Parents –Sleep pressure | Parents –Time in bed | Parents –Sleep time | Parents –Sleep efficacy | 
 
   
   | Students – Subjective sleep vulnerability | .23* | .11 | .18 | -.07 | .21* | .09 | -.11 | 
 
   
   | Students – Insomnia Severity Index | .23* | .18 | .01 | .05 | .14 | .06 | -.03 | 
 
   
   | Students – Dysfunctional beliefs about sleep | .13 | .19 | .24* | .12 | .20* | .17 | .05 | 
 
   
   | Students – Sleep pressure | .11 | .11 | .10 | .30** | .04 | .02 | .00 | 
 
   
   | Students – Time in bed | .02 | .00 | -.10 | -.05 | .18 | .23* | .13 | 
 
   
   | Students – Sleep efficacy | -.05 | .01 | -.06 | -.03 | -.22* | -.15 | .00 | 
 
   
   | Students – Time when go to bed | .16 | .05 | .05 | -.03 | .05 | .15 | .21* | 
 
   
   | Students – Time of awakening in the morning | .10 | .02 | -.11 | -.07 | .18 | .28** | .24* | 
 
   
   | Students – Time before get up after morning awakening | .03 | -.01 | .07 | .09 | .26** | .27** | .12 |