<prompt> Which of the following is a classical symptom of depression:-Early morning insomniaWeight lossGuiltDecreased appetite  <response>: Symptoms of depressionSIGECAPSS Sadness of mood Interest loss Guilt Energy loss Concentration loss Appetite loss Psychomotor agitation Suicidal thoughts Sleep disturbance - early morning insomnia is specific for depression - waking time shift up to 2 hours before -reduce latency of REM Sleep 