Positivity Scale (POS): New Evidence of Validity in the Brazilian Context

Abstract This study investigates new evidence of validity for the Positivity Scale (POS) to the Brazilian context. 876 individuals (66% women), with age varying from 18 to 83 years old participated in the study. A multigroup confirmatory factor analysis was conducted to evaluate gender measurement invariance. Results showed configural, metric and scalar invariance, suggesting POS to be invariant for both men and women. Two multiple linear regression analysis were conducted to evaluate the relation among the POS with constituent variables of the construct positivity (model 1) and with convergent constructs (model 2). Results from model 1 suggested that, in fact, positivity can be considered a composite of self-esteem, hope, optimism and life satisfaction. Results from model 2 provided further convergent validity evidence for the scale. This study extends the validity evidence for the POS in the Brazilian context.

摘要
本研究针对巴西语境，为积极情感量表（Positivity Scale, POS）补充了全新的效度验证证据。本研究共招募876名被试，其中女性占比66%，年龄分布在18至83岁之间。本研究采用多组验证性因子分析，检验该量表在性别维度上的测量不变性。分析结果显示，该量表在结构、度量与标量层面均满足测量不变性，表明POS在男性与女性群体中均具备一致的测量特性。本研究开展两项多元线性回归分析，分别用以检验POS与积极情感构念的构成变量（模型1）、以及与会聚构念（模型2）之间的关联关系。模型1的分析结果表明，积极情感实则可被视为自尊、希望、乐观主义与生活满意度的复合构念。模型2的分析结果则为该量表提供了进一步的会聚效度验证证据。本研究为巴西语境下的POS效度验证体系拓展了实证依据。