“…Mental health or ill-health were included in 40 studies. Mental ill-health was negatively correlated with optimism, parent, peer and teacher relationships, meaning in life and academic achievement (Bang et al, 2018;Bate et al, 2021;Bergeron et al, 1992;Bergeron et al, 2007;Chun & Chung, 2011;Drugli, 2013;Du et al, 2017;Fayed et al, 2015;Felix et al, 2013;Finch et al, 2020;Graham-Bermann et al, 1996;Guhn et al, 2013;Keyfitz et al, 2013;Kroesbergen et al, 2016;Lin et al, 2011;Manfro et al, 2017;Samara et al, 2020;Shoshani & Russo-Netzer, 2017;Stocker, 1994). Of the Strengths, hope was consistently found to have a negative relationship with externalising and internalising symptoms (Cedeno et al, 2010), anxiety, including social anxiety (Sahranc et al, 2018), and depression (Chai et al, 2018;Elvin et al, 2021;Finch et al, 2020).…”