“…This definition is accompanied by a multidimensional structural model of adult playfulness: the OLIW model, which consists of Other-directed (e.g., using playfulness in social situations to solve tension), Lighthearted (e.g., a spontaneous view of life without thinking much of consequences of the behavior; liking improvising over planning), Intellectual (e.g., enjoying play with new ideas and come up with new solutions for intellectual problems), and Whimsical playfulness (e.g., preferring odd or extraordinary things or people; Proyer, 2017). The OLIW facets show good observability in interpersonal perception studies testing the self-other agreement and consensus among observers (e.g., Proyer, 2017;Proyer and Brauer, 2018), and relate to numerous outcomes such as subjective well-being, mental and physical health (e.g., Proyer et al, 2018b;Farley et al, 2020), personality pathology (e.g., Proyer et al, 2020), and domains of romantic life [e.g., assortative mating, relationship satisfaction in actors and partners, or sexual role play; see e.g., Chick, 2001;Aune and Wong, 2002;Chick et al, 2012;Turley et al, 2017;Proyer et al, 2018aProyer et al, , 2019a; for an overview, see Brauer et al (2021)]. The associations and overlap between playfulness and preferences in seeking stimulation by means of novel experiences have been discussed in the literature (e.g., Zuckerman, 1991Zuckerman, , 1994Panksepp, 1998;Zaleskiwicz, 2001), but its relationship with SS is not yet understood; our study aims to narrow this gap in the literature.…”