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Fig. 3 | BMC Medical Research Methodology

Fig. 3

From: Prior test experience confounds longitudinal tracking of adolescent cognitive and motor development

Fig. 3

a-d Two left panels: The gray spaghetti plots show speed performance of each person for each of the four test sessions for each test composite. The gray regression lines indicate the ± 1 and ± 2 standard deviations of all participants. The color regression lines indicate the mean and 95% confidence interval of the performance by male (blue) and female (red) participants. The left plots show the learning + developmental effect; the right plots show the learning-adjusted developmental effect. Three right panels depict learning by session in speed scores. The first plot presents the fit of the cross-sectional scores at each test session over age: black = test 1, red = test 2, green = test3, and blue = test 4. The second plot displays the learning between tests 1–2 (red), tests 2–3 (green), and tests 3–4 (blue) over age. The third plot also displays the learning over age between test pairs normalized at 0 to reveal age effects and their differences between test pairs. Unlike the accuracy scores, the general trend for the speed scores showed different age trends for the different test composites

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