Validation of Ludic-Quest to the playfulness of health games: gameplay and emotions on the field.

Objective: to validate Ludic-quest construct and reliability to assess game playfulness, through latent factors in gameplay, perception of learning and emotions in the game.

Methods: a cross-sectional study to validate the instrument's psychometric properties. 247 people responded to the questionnaire after a match in the game Violetas.

[The relationship between Brazilian legislation on the mandatory use of restraint devices for zero- to four-year-old children in vehicles and the numbers of injured and dead in traffic accidents].

The scope of this article is to address the relationship between mandatory restraint devices and hospitalizations and deaths of zero- to four-year-old age children in traffic accidents in Brazil. Based on the mandatory use of child restraint devices for children up to 4 years of age under Brazilian traffic legislation in 2010, the authors apply data from the DataSUS and Denatran databases to analyze the time series of hospitalizations and deaths of zero- to four-year-old age children in traffic accidents between September 2005 and August 2015. Two cut-off sample periods were examined, the first consisting of an analysis from 2005 to 2015, which was subsequently subdivided into two samples, namely before and after the requirement.

Gameplay, learning and emotions in the board game Violets: cinema & action in combating violence against women.

The board game Violets: cinema and action in combating violence against women was developed prioritising the liberating features of play to offer a setting for struggles to secure citizenship. The objective of the article was to examine the gameplay of Violets as regards players' understanding of the rules and engagement, and the game's mechanics and design; and to evaluate gameplay, emotions and learning comparatively as dimensions of play. This mixed method study proceeded in stages: a) perfecting gameplay: a workshop with 12 experts, usability tests with 33 participants and content analysis; and b) evaluating play: questionnaires for 78 participants and non-parametric Mann-Whitney U-test comparing groups of variables.