Professor Andrade Has Been Investigating the Relationship of Sleep to Depression

Multiple Choice

 Professor Andrade has been investigating the relationship of sleep to depression for years. He has shown that

A) depression seems to be related most to irregular or missing circadian rhythms.
B) men seem to have a phase advance and women have a phase delay in sleep patterns.
C) depression for everyone is correlated with a phase advance in sleep.
D) depression for everyone is correlated with a phase delay in sleep.