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This paper aims to adapt the Gratitude Questionnaire (GQ-6) to Brazil, gathering evidence of its validity (factorial and criterion) and reliability. Two studies were carried out. Participants in Study 1 were 471 undergraduate students (Mage = 22.8; 59.2% females), who answered the GQ-6 and demographic questions. To conduct exploratory (EFA) and confirmatory (CFA) factorial analyses, respectively, this sample was split in two (n1 = 226; n2 = 245). The EFA (Hull method) indicated a one-dimensional solution (α = 0.87), which was corroborated by CFA (e.g., CFI = 0.99; α = 0.72). Participants in Study 2 were 515 undergraduate students (Mage = 23.1; 56.6% females), who answered the previous instruments, the 12-item Purpose of Life Test, and the Multi-Attitude Suicide Tendency Scale. Results corroborated the one-factor structure (e.g., CFI = 0.97; α = 0.71), showing evidence of criterion validity (p <.001) of the GQ-6 with meaning of life [existential lack (r = −.50) and personal achievement (r =.52)] and attitudes towards life [attraction to life (r =.44) and repulsion by life (r = −.49)]. In conclusion, the GQ-6 showed evidence of validity (factorial and criterion) and reliability, justifying its use in Brazil. [ABSTRACT FROM AUTHOR]

This study aimed at knowing the psychometric parameters of the Antisocial and Delictive Behaviors Questionnaire (ADQ). Specifically, it tried to join evidences of its factor validity and reliability in the milieu of Paraíba- Brazil, as well as to know the adequacy of a briefed version of this measure. Two studies were accomplished. In Study 1, the participants were 480 students from high school, with a mean age of 16.2 years old (SD = 1.60), most of them were women (55.1%). In Study 2, 1,463 students of elementary school, high school, and university; with ages ranging from 10 to 36 years old (m = 16; SD = 4.41) participated in research, 59.9% were female. They answered the Antisocial and Delictive Behaviors Questionnaire and to demographic questions. Results supported the psychometric adequacy of this measure, which showed the theorized bi-factor structure. Moreover, the purpose of the ADQ briefed version revealed itself adequate, jointing evidences of factor validity and reliability similar to those of the original version. These findings were discussed based on literature and future researches are suggested as well. [ABSTRACT FROM AUTHOR]

The aim of this paper was to validate the Brazilian-Portuguese version of the Satisfaction With Life Scale (SWLS), presenting evidence of its reliability and construct and criterion-related validity. A large Brazilian sample (2,180 participants), from five different populations (undergraduate and high school students, general population, elementary school teachers, and physicians), was considered. The results confirmed the single factorial structure and reliability (0.77 < Cronbach’s α < 0.88, mean α = 0.81) of the SWLS. Supporting its criterion-related validity, the SWLS correlated positively with positive affect and negatively with both negative affect and psychological distress across all five samples. The findings indicate that the Brazilian-Portuguese version of the SWLS is a valid instrument to use with diverse Brazilian samples. [ABSTRACT FROM AUTHOR]