As
an
ancillary
and
post
hoc
analysis
to investigate whether it is the negative affect reflected in the N-scale items, or the impulsiveness reflected in the P-scale items, that is driving the personality mediation effects, we created a neuroticism variable by summing the 13 N-items of the EPQ-R Addiction Scale, and an impulsiveness variable by summing the 9 P-items.