This study investigates posture on mental math performance. 125 students (M = 23.5 years) participated as part of a class activity. Half the students sat in an erect position while the other half sat in a slouched position and were asked to mentally subtract 7 serially from 964 for 30 seconds. They then reversed the positions before repeating the math subtraction task beginning at 834. They rated the math task difficulty on a scale from 0 (none) to 10 (extreme). The math test was rated significantly more difficult while sitting slouched (M = 6.2) than while sitting erect (M = 4.9) ANOVA [F(1,243) = 17.06, p < 0.001].
https://nationalaffairs.com/blog/detail/findings-a-daily-roundup/nonsense