Table 3 presents the results for the random-effects, meta-analytic connected-linear spline regression models predicting levels of heritability, environmentality, and corrected environmentality by age. Table 4 presents the results of the fixed-effects, exponential models for the outcomes. Figure 3 presents the raw data and best fitting models graphically. In Figure 3, the scatterplot of the data is displayed with the trend lines superimposed. Each effect size is represented as a dot at the point estimate surrounded by a circle with a diameter that has been scaled relative to the weight that the data point carried in the analyses. To aid visualization, we performed transformations on the weighting variable (e.g., dividing by a constant, taking the square root to minimize outliers), and an upper limit was placed on the size of each circle. Larger circles are indicative of data points that were weighted more strongly.
