Digital media use and impact questionnaire

: contributions towards its development

Abstract

The present study is part of the Media Activity and Mental Health project and aimed to contribute to the development of the Digital Media Use and Impact questionnaire (DMUIq). The three specific aims were: 1) to characterise the use of digital media (DM) in a sample of Portuguese adolescents; 2) to contribute to the development of the Portuguese version of the Media Multitasking Scale (MMS); and 3) to study the psychometric properties of the DMUIq. This study involved a sample of 171 youths aged between 11 and 16 (M age = 13.67; SD= 1.07), from two schools in the north of Portugal. Results demonstrated that youths spent more hours on (DM) on a typical weekend day than on a typical weekday, social media was the activity most performed on a typical weekday. The Portuguese version of the MMS demonstrated being a reliable and consistent instrument to investigate how youths use DM. The experimental version of DMUIq also demonstrated being a practical, valid, and reliable screening tool to assess the impact that DM has upon youths.

Date of Award	14 Jul 2023
Original language	English
Awarding Institution	Universidade Católica Portuguesa
Supervisor	Luísa Campos (Supervisor) & Lurdes Veríssimo (Co-Supervisor)