“…There are several applications of IRT to the development and validation of measurement instruments (e.g., Anselmi et al, 2011, 2015; Anselmi, Vianello, & Robusto, 2013; Anselmi, Vianello, Voci, et al, 2013; C. Brown et al, 2015; Childs et al, 2000; Colledani, Anselmi, et al, 2018; Colledani et al, 2019a, 2019b; Colledani, Robusto, et al, 2018; Da Dalt et al, 2013, 2015, 2017; Rossi Ferrario et al, 2019; Rouse et al, 1999; Sotgiu et al, 2019; Vidotto et al, 2018; Zanon et al, 2016). IRT has been used to investigate the psychometric properties of different instruments for measuring problem gambling.…”