Another way in which our sleep styles vary involves how long we like to sleep. If you crave a lot of sleep—even more than eight hours per night—it’s likely you fall into the category of “people who need people,” as the Streisand song goes.

Norah Vincent, Ph.D., an associate professor and clinical psychologist at the University of Manitoba in Canada, conducted a large study examining the relationship between sleep and personality in nearly 6,000 Americans.

“People who were more reliant on others for good feelings about themselves tend to sleep significantly longer,” she says, noting that there’s nothing abnormal about this, it’s just a measure on which people vary significantly.

However, long sleepers do have a tendency toward depression, a condition that is also very sensitive to the amount of social support peo