Author | Stanley Coren, PhD


Sleep Deprivation, Psychosis and Mental Efficiency

March 01, 1998

Today, average young adults report sleeping about seven to seven and one-half hours each night. Compare this to sleep patterns in 1910, before the electric lightbulb, the average person slept nine hours each night. This means that today's population sleeps one to two hours less than people did early in the century.