Table 4. PSQI correlations with daydreaming, mind wandering and chronotype.
| Daydream Frequency | Mind Wandering | Chronotype (rMEQ) | |||||
| PSQI | Study 1 | Study3 | Study 2 | Study 3 | Study 1 | Study 2 | Study 3 |
| Bed time | .165* † | .085 | .146* | .190** | −.507*** | −.485*** | −.369*** |
| Rise time | .103 | .064 | .025 | .122* | −.242*** | −.234** | −.245*** |
| Sleep duration ‡ | −.105 | −.109 | −.028 | −.145* | .298*** | .124 | .146* |
| C1 Subjective sleep quality | .167* | .178** | .291*** | .227*** | −.184** | −.127 | −.108 |
| C2 Sleep latency | .202** | .255*** | .167* | .272*** | −.103 | −.098 | −.029 |
| C3 Sleep duration ‡ | .075 | .084 | .021 | .136* | −.265*** | −.044 | −.123* |
| C4 Habitual sleep efficiency | .108 | .142* | −.115 | .131* | −.028 | .069 | −.087 |
| C5 Sleep disturbances | .209** | .150* | .183* | .165** | −.07 | −.047 | −.023 |
| C6 Use of medication | −.110 | −.024 | .001 | −.006 | .104 | .027 | .090 |
| C7 Daytime dysfunction | 353*** | .321*** | .375*** | .364*** | −.262*** | −.187** | −.209** |
| Global PSQI score | .299*** | .344*** | .302*** | .394*** | −.244*** | −.145* | −.163** |
| Chronotype (rMEQ) | −.165* | −.119 (p = .052) | −.190** | −.207** | − | − | − |
Study 1, N = 213; Study 2, N = 190; Study 3, N = 270.
*p≤.05;
** p≤.01;
*** p≤.0005.
†
Partial correlations, controlling for age.
‡
‘Sleep duration’ = reported hours of sleep; ‘C3 Sleep duration’ = coded, whereby higher score = less sleep duration.