“…Specifically, Allik, Laidra, Realo, and Pullmann (), studying Estonian children from age 12 onwards, noted that there was ‘no systematic trend in standard deviations: older children were not more variable in their personality traits than younger children’ (p. 450). A similar conclusion could be drawn by inspecting the standard deviations reported by de Haan, Deković, van den Akker, Stoltz, and Prinzie () for Belgian children aged between 9 and 12 years. In contrast, inspection of the descriptive statistics reported by two other studies conducted with Dutch (van der Aa et al, ) and American (Johnson, Hicks, McGue, & Iacono, ) adolescents and emerging adults suggests a tendency—not discussed by the authors—towards slightly decreasing personality variance with age.…”