“…As the ATI-TA has been widely employed to assess TA in adolescents, attention has also been paid to its psychometric properties. Concerning the dimensionality of the scale, several studies have confirmed that the best structural solution is a six-factor structure in which each dimension measures a positive or negative attitude towards the three time periods (e.g., Alansari et al, 2013; Çelik, Sahranç, Kaya, & Turan, 2017; Chishima, Murakami, Worrell, & Mello, 2017; McKay et al, 2015; Mello et al, 2016; Şahin-Baltacı, Tagay, Worrell, & Mello, 2017; Wells et al, 2018a; Worrell et al, 2013; Worrell, McKay, & Andretta., 2018). This structure has shown the best solution compared with a two-factor model focussing on valence (i.e., positive and negative) alone (e.g., Alansari et al, 2013; McKay et al, 2015; Mello et al, 2016; Şahin-Baltacı et al, 2017), and a three-factor model that represents the three time periods (i.e., past, present, and future; e.g., Alansari et al, 2013; McKay et al, 2015; Mello et al, 2016; Şahin-Baltacı et al, 2017; Worrell et al, 2013, 2018).…”