An interesting interview with Royette Tavernier of Wesleyan University, about her work on sleep and chronotype:
Empirical evidence indicates that US children and adults alike are getting less sleep than previous generations. This is a critical issue because of the importance of adequate and good-quality sleep for physical, cognitive, psychological, and interpersonal functioning. Furthermore, this pattern of increasing sleep debt coincides with increases in several physical and psychological health ailments, including depression, anxiety, and obesity.
Here is a paper she co-authored with the interesting title: “Are all evening-types doomed? Latent class analyses of perceived morningness–eveningness, sleep and psychosocial functioning among emerging adults”