Table 7 Comparisons of the results of psychological analyses in the main analyses and those that included length of videogame play as a covariate.

From: Childhood socioeconomic status is associated with psychometric intelligence and microstructural brain development

 

Main analyses

(multiple regression analyses of the main analyses)

Multiple regression analyses with the length of videogame play as a covariate

Mediation analyses that modeled length of videogame play as a mediating variable

Dependent variables

β (95% CI)

T

P (unc)

P (FDR)

β

T

P (unc)

P (FDR)

T

P (unc)

P (FDR)

Cross-sectional

FSIQ

0.099 (0–0.198)

1.646

0.050

0.042

0.082

(−0.018–0.183)

1.352

0.089

0.112

1.681

0.047

0.049

Cross-sectional

VIQ

0.131 (0.033 –0.230)

2.203

0.014

0.022

0.111

(0.011–0.211)

1.832

0.034

0.086

2.122

0.017

0.033

Cross-sectional PIQ

0.020 (−0.079–0.120)

0.337

0.368

0.258

0.012

(−0.089–0.113)

0.195

0.423

0.444

0.492

0.311

0.272

LongitudinalFSIQ change

0.151 (0.046–0.255)

2.375

0.009

0.022

0.127

(0.020–0.235)

1.953

0.026

0.086

2.270

0.012

0.033

LongitudinalVIQ change

0.137 (0.032–0.243)

2.149

0.016

0.022

0.114

(0.006–0.221)

1.744

0.041

0.086

2.090

0.019

0.033

LongitudinalPIQ change

0.114 (0.012–0.216)

1.854

0.033

0.035

0.100

(−0.006–0.205)

1.562

0.060

0.095

1.764

0.040

0.049

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