Table 4 Spearman Rho coefficients between diary-measures of screen time and cognitive development

Bivariate

Correlations

 Working memory

(n = 40)

r_s = 

-0.40*

p = 0.011

r_s = -0.42*

p = 0.007

r_s = -0.28†

p = 0.078

r_s = -0.09

p = 0.573

r_s = -0.05

p = 0.739

r_s = -0.19

p = 0.249

 Inhibitory control

(n = 34)

r_s = -0.16

p = 0.370

r_s = -0.28

p = 0.109

r_s = -0.06

p = 0.743

r_s = 0.15

p = 0.382

r_s = 0.23

p = 0.189

r_s = -0.18

p = 0.299

 Vocabulary

(n = 42)

r_s = -0.21

p = 0.189

r_s = -0.29†

p = 0.066

r_s = 0.22

p = 0.166

r_s = 0.24

p = 0.121

r_s = 0.20

p = 0.214

r_s = 0.02

p = 0.901

 Self-control

(n = 41)

r_s = 0.03

p = 0.867

r_s = -0.03

p = 0.867

r_s = 0.06

p = 0.723

r_s = 0.07

p = 0.678

r_s = 0.15

p = 0.341

r_s = -0.30

p = 0.057†

Partial

Correlations^a

 Working memory (n = 40)

r_s = -0.32

p = 0.056†

r_s = -0.32

p = 0.056†

r_s = -0.26

p = 0.125

r_s = 0.10

p = 0.574

r_s = -0.03

p = 0.876

r_s = -0.14

p = 0.410

 Inhibitory control (n = 34)

r_s = -0.13

p = 0.496

r_s = -0.20

p = 0.276

r_s = -0.13

p = 0.499

r_s = 0.33

p = 0.074†

r_s = 0.26

p = 0.155

r_s = -0.19

p = 0.304

 Vocabulary (n = 42)

r_s = -0.20

p = 0.213

r_s = -0.27

p = 0.102

r_s = 0.23

p = 0.156

r_s = 0.38*

p = 0.018

r_s = 0.21

p = 0.204

r_s = 0.08

p = 0.644

 Self-control (n = 41)

r_s = 0.04

p = 0.815

r_s = 0.01

p = 0.948

r_s = 0.05

p = 0.746

r_s = 0.16

p = 0.349

r_s = 0.19

p = 0.265

r_s = -0.32*

p = 0.049