Resumo Esse trabalho teve por objetivo principal investigar as relações existentes entre a Escala Brasileira de Solidão (UCLA-BR) e os níveis de depressão, ansiedade e estresse em estudantes universitários brasileiros. Esses conceitos foram avaliados utilizando escalas validadas (Questionário sobre a saúde do paciente - PHQ-9, Depression, Anxiety and Stress Scale - DASS-21, Inventário Beck de Ansiedade - BAI e Inventário de Sintomas de Stress de Lipp - ISSL). Participaram 325 universitários, que responderam todos os instrumentos. Foram conduzidas análises descritivas, correlacionais e de diferenças de grupo. A prevalência de depressão, ansiedade e estresse variou dependendo do instrumento utilizado. A UCLA-BR apresentou evidências de validade baseadas nas relações com depressão, ansiedade e estresse, principalmente depressão (avaliada pela DASS-21). Analisar as escalas de medida pode ajudar a compreender aspectos da saúde mental dos universitários.

Abstract This paper aimed mainly to investigate the relationships between Brazilian Loneliness Scale (UCLA-BR) and the levels of depression, anxiety and stress in Brazilian college students. These concepts were assessed using validated scales (Patient Health Questionnaire - PHQ-9, Depression, Anxiety and Stress Scale - DASS-21, Beck Anxiety Inventory - BAI and Lipp Stress Symptom Inventory - ISSL). A total of 325 college students participated and responded all the instruments. Descriptive, correlational and group differences analyzes were conducted. The prevalence of depression, anxiety and stress varied depending on the instrument used. UCLA-BR presented evidence of validity based on relationships with depression, anxiety and stress, especially depression (assessed by DASS-21). Analysis of measurement scales can help to understand aspects of college students’ mental health.

Resumen Este estudio tuvo como objetivo principal investigar la relación entre la Escala Brasileña de Soledad (UCLA-BR) y los niveles de depresión, ansiedad y estrés en estudiantes universitarios brasileños. Estos conceptos se evaluaron mediante escalas validadas (Cuestionario de Salud del Paciente - PHQ-9, Escala de Depresión, Ansiedad y Estrés - DASS-21, Inventario de Ansiedad de Beck - BAI e Inventario de Síntomas de Estrés de Lipp - ISSL). Participaron 325 estudiantes, quienes respondieron a todos los instrumentos. Se realizaron análisis descriptivos, correlacionales y de diferencias grupales. La prevalencia de depresión, ansiedad y estrés varió de acuerdo con el instrumento utilizado. UCLA-BR presentó evidencias de validez basadas en relaciones con depresión, ansiedad y estrés, especialmente depresión (evaluado por DASS-21). El análisis de escalas de medición puede ayudar a comprender aspectos de la salud mental de los estudiantes universitarios.

ABSTRACT Oil and gas resources have been considered valuable assets, associated with potential conflicts due to distinct interests of many agents involved in their exploration, such as producing and consuming countries, governments and companies. These conflicts can show up under many situations and market conditions, such as partnerships, joint development, optimal outputs and reserve maximization. Game theory is known as a methodology that improves the decision-making processes by better understanding the players’ specific motivations, strategic interactions and payoff estimation. A widely used framework for modeling social and economic phenomena is the 2 x 2 strategic games, of which include classical forms such as Prisoner’s Dilemma, Stag Hunt, and Battle of Sexes. Therefore, this paper proposes to examine relevant realistic and real-world cases of the oil and gas industry in the form of 2 x 2 strategic games, aiming to investigate game theory approaches to aid in the discussion and resolution of the main dilemmas faced.