Sleep onset latency (SOL), the length of time that it takes to accomplish the transition from full wakefulness to sleep, during midlife could lead to lower life satisfaction, according to a study conducted at Ohio Northern University.
The research was performed under the supervision of Dr. Megan Clegg-Kraynok, ONU assistant professor of psychology. The data was collected as part of Midlife in the United States II (MIDUS II), a national study funded by the National Institute on Aging.