“…A long-lasting methodological issue of children's behaviours is rater bias, which can differ between parents, teachers, and researchers (e.g., Hinshaw, Han, Erhardt, & Huber, 1992;Hubert, Wachs, Peters-Martin, & Gadour, 1982;Kolko & Kazdin, 1993;Lyon & Plomin, 1981;Neale & Stevenson, 1989;Renouf & Kovacs, 1994;Satake, Yoshida, Yamashita, Kinukawa, & Takagishi, 2003;Yuh, 2017;Weissman et al, 1987). Bias is an obstacle in clinical research where parents are used as observers of child temperament.…”