Vilca Lindsey W, Echebaudes-Ilizarbe Robert I, Aquino-Hidalgo Jannia M, Ventura-León José, Martinez-Munive Renzo, White Michael
Universidad Peruana Unión, Lima, Perú.
Universidad Privada del Norte, Lima, Perú.
Psychol Rep. 2022 Feb;125(1):649-675. doi: 10.1177/0033294120981930. Epub 2020 Dec 24.
The aim of this study was to assess the factorial structure of the scale, the method's effect associated with its negative items, its temporal invariance, and factorial invariance according to sex. For this purpose, three samples were collected, an initial sample of 200 participants, a second sample of 461 participants and a third sample of 107 participants; making a total of 768 Peruvian university students. Other instruments were applied together with the EROS scale in order to measure satisfaction with life, anxiety, stress and depression. Regarding the results, in the initial sample it was found that the original scale containing positive and negative items does adequately fit the data (RMSEA = .19; CFI = .77; TLI = .71) and also evidence was found supporting the existence of a methodological effect associated with the negative items. It was also found that version B of the scale which only has positive items data fits the data (RMSEA = .13; CFI = .96; TLI = .95). In the second sample it was found that version B still had a good fit to the data in a larger sample (RMSEA = .07; CFI = .98; TLI = .98). In addition, it was found that the scale can be considered invariant according to sex and presents validity based on other constructs. In the third sample it was found that the test-retest reliability of the scale was adequate (.70 [CI95% .593-.788]) and also evidence was found in favor of the temporal invariance of the scale. It is concluded that the scale formed only by positive items presents more robust psychometric properties and constitutes a better alternative to measure the level of reward provided by the environment.
本研究的目的是评估该量表的因子结构、与负面项目相关的方法效应、其时间不变性以及按性别划分的因子不变性。为此，收集了三个样本，第一个样本有200名参与者，第二个样本有461名参与者，第三个样本有107名参与者；共有768名秘鲁大学生。除了EROS量表外，还应用了其他工具来测量生活满意度、焦虑、压力和抑郁。关于结果，在初始样本中发现，包含正面和负面项目的原始量表能够充分拟合数据（RMSEA = 0.19；CFI = 0.77；TLI = 0.71），并且还发现有证据支持存在与负面项目相关的方法效应。还发现仅包含正面项目数据的量表版本B能够拟合数据（RMSEA = 0.13；CFI = 0.96；TLI = 0.95）。在第二个样本中发现，版本B在更大的样本中仍然与数据拟合良好（RMSEA = 0.07；CFI = 0.98；TLI = 0.98）。此外，发现该量表可被认为按性别具有不变性，并基于其他构念具有效度。在第三个样本中发现，该量表的重测信度足够（0.70 [CI95% 0.593 - 0.788]），并且也发现有证据支持该量表的时间不变性。结论是，仅由正面项目构成的量表具有更强健的心理测量特性，并且是测量环境提供的奖励水平的更好选择。
