We formed two datasets: one arranged in a cross-sequential manner with heritability and environmentality at each time point, and another with the phenotypic stability, genetic and environmental correlations and contributions to phenotypic stability associated with each pair of time points. This approach resulted in 330 × 3 (heritability, environmentality, and corrected environmentality) effect sizes for the cross-sequential dataset and 251 × 6 (phenotypic stability, genetic stability, environmental stability, corrected environmental stability, genetic contribution to stability, and environmental contribution to stability) effect sizes in the longitudinal dataset. In the cross-sequential dataset, each study contributed an average of 28.66 sets of effect sizes (SD = 17.74, range = 2–60). In the longitudinal dataset, each study contributed an average of 26.26 sets of effect sizes (SD = 20.17, range = 1–60). These outcomes were associated with information about age in the first dataset and age at the initial time point and the time interval between measurements in the second dataset. Additional variables included in the dataset are described below.
