Table 2 Analysis of variance on the congruency effect by Group, Task instruction, and Congruency condition

From: A left-to-right bias in number-space mapping across ages and cultures

Two-way ANOVA (Himba Adults 2021 excluded)*

Factor

Dfn

Dfd

SSn

SSd

F-value

pvalue

η2partial

η2p CI 90%

Group

2

160

0.007

0.928

0.576

0.563

0.007

[0 0.034]

Task instruction

1

160

0.122

0.924

21.164

<0.001

0.117

[0.049 0.196]

Group x Task instruction

2

160

0.007

0.924

0.599

0.551

0.007

[0 0.035]

One-way ANOVA (Himba Adults 2021 only)*

Factor

Dfn

Dfd

SSn

SSd

F-value

pvalue

η2partial

η2p CI 90%

Task instruction

1

57

0.048

0.541

5.011

0.029

0.081

[0.005 0.206]

  1. *Himba adults 2021 have been analysed separately due to a difference in the paradigm design: Task instruction varied between-subjects in Himba 2021 and within-subjects in the other groups (see “Methods” section for details).
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