“…Data aggregation is a common practice in heritability estimation. Examples can be found in the fields of psychometrics (e.g., Rea-Sandin et al, 2023; ; Hung et al, 2023; Gustavson et al, 2023; Vellani et al, 2022; Viktorsson et al, 2022; Yeom et al, 2022; Wang et al, 2020; Routledge et al, 2018; Stins et al, 2005; Schachar et al, 2010; Fan et al, 2001) and neuroimaging (Kastrati et al, 2022; van Drunen et al, 2021; Chen et al, 2019; Harper et al, 2019; van der Meulen et al, 2018; Anokhin et al, 2017; Blokland et al, 2011; Matthews et al, 2007; Polk et al, 2007). This practice is also popular in test-retest reliability estimation in psychometrics (e.g., Hedge et al, 2018) and neuroimaging (e.g., Elliott et al, 2020).…”