Nonrestorative Sleep RSQ (Restorative Sleep Questionnaire) Development-- Methodology Study

Inclusion Criteria: * Subjects who self report nonrestorative sleep but no problems either getting to sleep or staying asleep * Complaints of significant distress or impairment in social, occupational, or other important areas of functioning during daytime for at least 3 nights per week * Self reports sWASO (Wake after sleep onset) for \<45 minutes for past 3 months, self reports LPS (latency to persistent sleep onset ) for \<20 minutes for past 3 months (then neither PSG (polysomnography) screening night showing WASO \>45min, or LPS \> 20 minutes) * Customary bedtime betw. 9 pm and midnight and rise between 4 and 9 AM Exclusion Criteria: * Psychiatric disease or disorder as determined by current administration of the MINI (Mini International Neuropsychiatric Interview) * History or presence of any breathing-related sleep disorder, narcolepsy, or any other dyssomnias or any parasomnia, or restless legs syndrome MAP \> 0.5 at screening * History or presence of any medical or neurological condition that could interfere with sleep (chronic pain, Restless leg, etc) * Current use of meds wth known psychotropic effects or known or suspected effects on sleep * Alcohol or substance abuse (unless in remission for at least a year * Excessive caffeine use (or any use after 6 pm for at least 3 months * Regular napping or any naps after 6 pm * Excessive cigarette or cigar smoking over the last 3 months * no participation in an investigational new drug study within 30 days of screening, and no previous participation in a study of PD200390 * No night or rotating shift work