The prototypical analysis of evocations is one of the main techniques that allows the exploration of the structure of social representations from verbal data. The present study aims to evaluate the effect of variations in the size of the sample in the configurations of the results of the prototypic analysis from free evocations. Subsamples were randomly selected from a database with 469 participants with progressively smaller sample sizes (200, 100, 50 and 25 cases), and compared the results settings of the first quadrants with respect to the reference sample. The results show that the samples of 200 and 100 cases have patterns close to the total sample in terms of agreement with the composition of the first quadrant. In addition, samples with 50 and 25 participants are not recommended because they have high variability and low coincidence with the larger sample.  

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...