Abstract
Antecedents: Motivation for using social networks helps to understand the online behaviors of the adult population and can be a relevant predictor of several variables, considering its common usage on a daily routine. Objective: This article aimed to seek evidence of validity and accuracy for the Social Media Motivations Scale (SMM-S) in the Brazilian context and understand its relationship with personality and life satisfaction. Method: The research was carried out in two stages, with 600 adults in each one, users of online social networks. In both samples, most were women with higher education, from all Brazilian regions and pointed Instagram as their favorite online service. Results: Results indicated that the adapted version of the Social Media Motivations Scale presented indicators of validity and reliability for a structure of four dimensions: Freedom in Social Networks, Routine in Social Networks, Identity in Social Networks and Social Maintenance. Correlations with life satisfaction and personality revealed evidence of convergent validity. Conclusion: The instrument showed validity psychometric evidences for the Brazilian context. The article presents a discussion of the motivations for social networks usage in different contexts.
 Authorship contribution
 All authors participated in the conception and design of the work, data acquisition, analysis and interpretation of data, writing of the manuscript, and critical review of the manuscript.
Highlights
The advent of Internet popularization provided several changes in conceiving communication between people (Copetti & Quiroga, 2018; Matias & Matos, 2013)
Concerning models one and two, it was observed that the internal structure of the Social Media Motivations Scale (SMM-S) in the Brazilian context presented indices that could be questioned due to comparative fit index (CFI) and Tucker-Lewis index (TLI) indicators below
A parallel analysis led to the decision of using a factorial structure based on the polychoric correlations matrix, which suggested the retention of four factors, as opposed to the original scale that was structured with ten dimensions
Summary
The advent of Internet popularization provided several changes in conceiving communication between people (Copetti & Quiroga, 2018; Matias & Matos, 2013). The growth in Internet access in Brazil has demonstrated its relevance as a facilitator of relationships, communication, and as a tool for solving everyday tasks (Instituto Brasileiro de Geografia e Estatística [IBGE], 2018; Seabra et al, 2017). In this context, one of the leading exponents of online communication is the social networking sites that favor sharing various elements between people, such as contacts and information (Patrício & Gonçalves, 2010; Rosado et al, 2014). The article discusses the motivations for social network usage in different settings
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