Fig. 3: Correlation between the two tasks.
From: A left-to-right bias in number-space mapping across ages and cultures
The correlation between Mapping Scores (x axis) and Congruency Effect (y axis) is not significant for either of the two task instructions (Two-tailed Kendall Tau correlation; Decreasing Task instruction (red), N = 110, p = 0.285; Increasing Task instruction (gray), N = 110, p = 0.799). The graph displays the linear regression with 95% confidence intervals, and individual points for each participant who completed both tasks (circles refer to Himba Adults 2021, triangles to Himba Adults 2022, and squares to Italian Preschoolers). The analysis included only the participants for which it was possible to calculate the Kendall tau scores (i.e. those who ordered the cards on a lateral line, see Fig. 1C), moreover, Italian adults were excluded from the analysis due to the skewness in their data (98% of the scores were perfectly equal to 1, see Fig. 1C).
