“…Currently, there are many studies devoted to various aspects of temperament in children. Among the factors affecting its development are things such as genetic impact (Qiu, Martin, & Blache, 2017; Sallis, Davey Smith, & Munafo, 2018; Saudino, 2005), prenatal influences (Brand, Engel, Canfield, & Yehuda, 2006; Gartstein & Skinner, 2018; Schlotz, Godfrey, & Phillips, 2014), sleep quality (De Marcas, Soffer‐Dudek, Dollberg, Bar‐Haim, & Sadeh, 2015) and other neurobiological bases of temperament (Davis & Panksepp, 2011; Whittle, Allen, Lubman, & Yucel, 2006), temperament stability throughout life (Bornstein, Hahn, Putnick, & Pearson, 2019; Kagan, Snidman, Kahn, & Towsley, 2007; Kopala‐Sibley, Olino, Durbin, Dyson, & Klein, 2018), outcomes (Caspi, Moffitt, Newman, & Silva, 1996; Kubzansky, Martin, & Buka, 2009), and many more. The overwhelming majority of these studies are based on measures derived from parental and other‐report questionnaires, at least three dozen of which exist for only research with children (Gartstein, Bridgett, & Low, 2012).…”