“…A declining-with-age trend is perhaps the dominant finding in the literature, and has been reported in early cross-sectional studies from Israel (Ullman & Tatar, 2001), South Korea (Park et al, 2005), Romania and Spain (Casas et al, 2013) and Germany (Goldbeck et al, Pg. 6 2007) and more recent longitudinal studies from Spain (Aymerich et al, 2021;González-Carrasco et al, 2017;González-Carrasco, Sáez, & Casas, 2020), Hong Kong (Shek & Liang, 2018), and Algeria (Tiliouine, Rees, & Mokaddem, 2019). However, a cross-sectional study in the US did not find a change in life satisfaction across grades 9-12 (Huebner et al, 2004).…”