“…For example, a positive mood boosts the generation of new ideas (Davis, 2009;Isen et al, 1987;Yamada and Nagai, 2015). A negative mood, particularly anger, also improves creativity (Baas et al, 2011). Additionally, certain body postures and physical action improve creative thinking (Hao et al, 2017;Oppezzo and Schwartz, 2014) and observing ambiguous figures that can be interpreted in two ways, such as Rubin's vase, enhances performance in creative tasks (Wu et al, 2016).…”