Psychometric validity and screening cutoff point of the short-form Chinese smartphone dependence questionnaire
Objective:The short-form Chinese smartphone dependence questionnaire(SPDQ)was developed and validated and established a cutoff point for screening smartphone dependence in China.Methods:A total of 221 participants completed a four-wave online survey that collected demographic data,general mental health,and responses to the 10-item Smartphone Addiction Inventory(SPAI-SF)and 7-tiem SPDQ.Factor analysis,internal consistency,test-retest reliability,and correlation analysis were conducted to verify the reliability and validity of SPDQ.Results:Confirmatory factor analysis(CFA)revealed that the 7-item SPDQ was selected to represent two-factor construct,including cognitive or mental response to dependence and behavioral response to dependence.For maximal diagnostic accuracy,a cutoff point of 4/5 best-discriminated cases of smartphone dependence as a reference to SPAI-SF.Conclusion:SPDQ demonstrated acceptable construct validity and fair to moderate levels of test reliability.This finding provides a valuable tool in population-based research on smartphone dependence in China.
smartphone dependencereliabilityvalidityscale development