Reflective smartphone disengagement: Conceptualization, measurement, and validation.

The present paper develops a new concept, called Reflective Smartphone Disengagement (RSD), defined as individuals' deliberate efforts to control and restrict smartphone use. Based on the reflective-impulsive model, we examined the RSD concept in four studies, using cross-sectional data of adolescents (Study 1, N = 453, Study 3, N = 760) and adults (Study 4, N = 672), as well as panel data of adults (Study 2, N = 461). In Study 1, findings from exploratory and confirmatory factor analyses supported the one-dimensionality of the RSD scale. In Study 2, we found evidence for high test-retest reliability as well as discriminant validity, and in terms of predictive validity, RSD negatively predicted excessive smartphone use, information overload, and the social availability norm over time. Study 3 demonstrated convergent validity with a negative relationship with trait nomophobia and a positive one with trait self-reflection. Study 4 confirms the structural validity of a shorter version of the scale. We discuss avenues for future research and broader implications of the RSD concept for the field.