Parta Patient Factors U 2. Psychological Factors 囗 Placebo effects B Placebo effects commonly are manifested as alteration of mood, other subjective effects, and objective effects that are under autonomic or voluntary controlPart A Patient Factors 2. Psychological Factors Placebo effects Placebo effects commonly are manifested as alteration of mood, other subjective effects, and objective effects that are under autonomic or voluntary control