Figure 2.

Individual differences in proportion of social app interactions covary with dopamine synthesis capacity in the bi-lateral posterior putamen

(A) Inverse relationship between individual differences in proportion social interactions and dopamine synthesis capacity (adjusted response plot of the multiple regression including speed and daily usage; inset shows unadjusted data). Dashed line is the estimated linear fit.

(B) The observed multiple regression slope (red) is extreme compared to the relationship observed in on 1000 random permutations of app category labels (gray).