Table 1: Baseline and follow-up means (standard deviations) for Narcissism (NPI), Problem Internet Use (PIUQ), and hours a day personal use for the sample, as well as the Pearson correlations between the variables.

Mean (SD) Baseline
PIUQ		 Baseline
Use 		Follow
NPI 		Follow
PIUQ		 Follow
Use
Baseline NPI 12.89 (5.81) .212 -.220 .828*** .144 -.202
Baseline PIUQ 23.21(10.86) – .261* .089 .812*** .305***
Baseline Use 3.16 (1.91) – – -.204 .183 .624***
Follow NPI 12.33 (6.05) – – – .004 -.233*
Follow PIUQ 22.45(11.49) – – – – .348**
Follow Use 2.91 (1.94) – – – – –

*p < .05; ** p < .01; *** p < .001