Abstract
The Satisfaction with Life Scale (SWLS) was originally proposed in the English language to measure the individual's overall perception in relation to life. The study aims to evaluate the psychometric properties of SWLS when applied to young adults and estimate the influence of demographic characteristics on life satisfaction, in a non-probabilistic sample of young adult individuals (18 to 35 years) of both sexes in Araraquara, São Paulo State, Brazil. We assessed the fit of SWLS to the data by confirmatory analysis, using the comparative fit index (CFI), Tucker-Lewis index (TLI), and standardized root mean square residual (SRMR). Reliability was estimated by the alpha ordinal coefficient and omega. Factor invariance was estimated by multigroup analysis, with CFI test of statistical difference (ΔCFI). Comparison of the mean scores on satisfaction with life according to sex, age, economic stratum, and employment status was performed with analysis of variance (ANOVA). Participation included 2,170 individuals (females: 67.8%; age: 22.09 years). The model's fit to the different samples was adequate (CFI = 0.981-0.998; TLI = 0.962-0.996; SRMR = 0.026-0.040; omega = 0.842-0.869; alpha = 0.862-0.889). Strict invariance was seen for the target variables. Life satisfaction was greater among individuals in higher economic strata. The data obtained with SWLS were valid, reliable, and invariant between samples with different sex, age, economic strata, and employment status. Life satisfaction was greater among individuals from higher economic strata and did not differ by sex, age, or employment status.
Highlights
Valores absolutos de assimetria e curtose acima de 3 e 7, respectivamente, foram considerados fortes desvios da normalidade [6,30]
Foram considerados os valores de comparative fit index (CFI) dos modelos configuracional (M0), do modelo dos pesos fatoriais (M1), do modelo dos thresholds (M2) e do modelo dos resíduos (M3)
Na Tabela 3, mostramos a comparação dos escores médios de satisfação com a vida de acordo com o sexo, a idade, o exercício de atividade laboral e o estrato econômico
Summary
Psychometric properties of the Satisfaction with Life Scale in young Brazilian adults. O objetivo do estudo é avaliar as propriedades psicométricas da SWLS quando aplicada a indivíduos adultos jovens e estimar a influência de características demográficas na satisfação com a vida. A satisfação com a vida foi maior entre os indivíduos de estrato econômico mais elevado, não diferindo segundo sexo, idade e exercício de atividade laboral. Para realizar a avaliação desse construto alguns instrumentos são apresentados na literatura, tais como a Subjective Happines Scale (SHS), Escala de Bem-Estar Subjetivo (EBES), a Satisfaction with Life Scale (SWLS), a Oxford Happines Inventory (OHI), a Positive and Negative Affect Schedule-Expanded (PANAS-X) 2.3.4, entre outros. Este estudo tem como objetivo avaliar as propriedades psicométricas da SWLS quando aplicada a indivíduos adultos jovens e estimar a influência de características demográficas na satisfação com a vida
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