Table 5.
Hierarchical regression analysis regarding independent predictors of cognitive control in high school female students.
| Dependent Variables | Independent Variables | β | Total r2 | p Value |
|---|---|---|---|---|
| ΔFlanker congruent MRT | Social media on WD at Y1 | 0.28 | 0.147 | 0.001 |
| Daily meals at Y1 | −0.29 | |||
| ΔFlanker incongruent MRT | Daily meals at Y1 | −0.24 | 0.099 | 0.012 |
| Social media on WD at Y1 | 0.22 | |||
| Δ1-back accuracy | Daily meals at Y1 | 0.39 | 0.210 | 0.000 |
| ΔTotal screen on WD | −0.24 | |||
| Δ2-back accuracy | ΔVideo games on WE | −0.32 | 0.100 | 0.007 |
| Δ2-back MRT | Social media on WD at Y1 | 0.41 | 0.206 | 0.000 |
| Daily meals at Y1 | −0.25 |
MRT: Mean reaction time, WD: weekdays, WE: Weekend, Y1: Year 1. Independent predictors included in the model varied between dependent variables based on significant correlations. None of the demographics variables (age, pubertal status and socioeconomic status) included in step 1 analysis remained in the final model.