Measuring Problematic Mobile Phone Use: Development and Preliminary Psychometric Properties of the PUMP Scale

Table 1

Pearson correlations between PUMP Scale, CPDQ, CUQ, and self-assessment items.

Item	PUMPS total score	P
CPDQ^a total score	.755	<.001
CUQ^b,c
How frequently do you typically use the email function on your phone?	.225	<.001
How frequently do you typically use the internet feature of your phone?	.312	<.001
How frequently do you use the games feature of your cell phone?	.203	.002
How often do you talk on the phone while driving?	.411	<.001
How often do you write text messages or emails while driving?	.612	<.001
Self-assessment questions
I sometimes think that I might be “addicted” to my cell phone.	.733	<.001
I use my cell phone more often than other people I know.	.609	<.001
Friends or family members have commented to me about my cell phone use.	.626	<.001

aCPDQ refers to the cell phone dependency tendency questionnaire.
bCUQ refers to the cell phone use questionnaire.
cAll CUQ item responses ranged from 1= never to 6= constantly.