“…The PSQ subscales have demonstrated good internal consistency and construct validity (Bornstein et al, 1996; Bornstein et al, 2001; Venuti & Senese, 2007). In the present study, the internal consistency of the Social and the Didactic scales (Cronbach α) were acceptable for both samples (Streiner, 2003) and invariant (Feldt, 1969; p s > .31), αsocial = .66, αdidactic = .60, and αsocial = .61, αdidactic = .60, respectively, for the Italian and U.S. samples.…”