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Table 1 Behavioral results for the arithmetic tasks

From: The neural correlates of mental arithmetic in adolescents: a longitudinal fNIRS study

Task

Npresented trials

RT

ACC

F 1,18

p

\(\eta_{p}^{2}\)

F 1,17

p

\(\eta_{p}^{2}\)

F 1,17

p

\(\eta_{p}^{2}\)

Addition

 Grade

2.93

.104

.140

1.49

.283

.081

3.98

.062

.190

 Complexity

166.33

< .001

.902

92.72

< .001

.845

15.63

.001

.479

 Grade × complexity

0.08

.783

.004

1.19

.291

.065

7.75

.013

.313

Subtraction

 Grade

1.61

.220

.082

1.43

.263

.073

7.32

.015

.301

 Complexity

299.87

< .001

.943

178.29

< .001

.913

7.20

.016

.297

 Grade × complexity

6.61

.019

.269

0.39

.539

.023

0.03

.877

.001

Multiplication

 Grade

0.00

.984

.000

0.73

.405

.041

3.24

.090

.160

 Complexity

191.66

< .001

.914

101.87

< .001

.857

55.25

< .001

.765

 Grade × complexity

1.27

.275

.066

0.24

.634

.014

0.16

.698

.009

Division

 Grade

0.03

.860

.002

0.69

.418

.039

1.15

.298

.063

 Complexity

150.03

< .001

.893

24.79

< .001

.593

67.90

< .001

.800

 Grade × complexity

0.47

.500

.026

0.58

.458

.033

0.66

.428

.037

  1. Significant effects are shown in italics.