Effect sizes (Fisher's Zr) can range from -5 to 5, corresponding to correlation coefficients r of -0.9999 and 0.9999, respectively. Effect sizes closest to 0 demonstrated no correlation with time, while those furthest away in both directions represented stronger relationships (e.g. Fisher's Zr = 0.5 (r = 0.46), Fisher's Zr = 1.5 (r = 0.91)). We computed effect sizes using the absolute values of the reported summary statistic as we were interested in the magnitude and strength of the observed relationship rather than the directionality of the trend (we note that 98% were positive).