Fig. 8

(a) Changes in Profile of Mood States (ΔPOMS) and (b) Perceived Restorativeness Scale (ΔPRS) across high- (HP), medium- (MP), and low-preference (LP) groups. Boxplots show that higher visual preference is associated with greater emotional improvement and perceived restoration. The effect of green wall preference on the ΔPOMS and ΔPRS was significant (p < 0.001).