Preliminary development of the social media disinformation scale (SMDS-12) and its association with social media addiction and mental health: COVID-19 as a pilot case study (Preprint)
BACKGROUND In recent years, online disinformation has increased. An infodemic has spread around the COVID-19 pandemic. Since January 2020, the culprits and antidotes to disinformation have been digital and social media. OBJECTIVE Our study aimed to develop and test the psychometric properties of the SMDS-12 measurement scale which assesses the consumption, confidence, and sharing of information related to covid-19 by social media users. METHODS A total of 874 subjects recruited over two exploratory (n = 179, Mean age = 29.34, SD = 7.98) and confirmatory (n = 695, Mean age = 31.22, SD = 11.63) periods, completed thesocial media disinformation scale (SMDS-12),the Internet addiction test (IAT), the COVID-19 fear scale, and the perceived stress questionnaire.The 12-item scale (SMDS-12 ) was initially tested by exploratory factor analysis. RESULTS The test supported the three-dimensional structure, in addition, no items were removed from the measurement scale. Subsequently, confirmatory factor analysis confirmed the robustness of the measure by referring to a wide range of goodness-of-fit indices that met the recommended standards. The reliability of the instrument examined by means of three internal consistency indices demonstrated that the three dimensions of the instrument are reliable.The correlation between the instrument's dimensions with the internet addiction scale and mental health factors showed positive associations. CONCLUSIONS The scale is eligible for measuring the credibility of disinformation and can be adapted to measure the credibility of social media disinformation in other contexts.