Fig. 2

Cumulative sums of parameter metrics. a Confidence intervals sorted in ascending order. Reference line is at 1.65, which is the threshold for intervals larger than expected by chance. Thus, most confidence intervals are within a reasonable range. b Learning effects sorted in ascending order. Approximately 60% of learning effects were negative, indicating a lower parameter Z-score at the second assessment than the first. c ICC-C values plotted in ascending order. Approximately 5% of each distribution were considered ‘good’ (> 0.75) and approximately 50% were > 0.50 (fair)