Research by Wilkes and colleagues confirms the psychological benefits of seats that encourage sitting with good posture. As the investigators report, research has generally shown that “upright posture improves self-esteem and mood in [psychologically] healthy samples.” Wilkes and her team studied a group of people “with mild to moderate depression.” Some study participants were asked to sit with good posture and others were not. The researchers found that “The postural manipulation significantly improved posture and increased high arousal positive affect. . . . Upright shoulder angle was associated with lower negative affect and lower anxiety.” So, study participants who were asked to sit with better posture were in more positive moods and had more energy than people who were not instructed to sit up straight and sat however they chose.
Carissa Wilkes, Rob Kydd, Mark Sagar, and Elizabeth Broadbent. 2017. “Upright Posture Improves Affect and Fatigue in People with Depressive Symptoms.” Journal of Behavior Therapy and Experimental Psychiatry, vol. 54 pp. 143-149.