Bianchi Javier M, Ramírez-Cruz José Carlos, Fierro Jimenez Raúl Alejandro, Cruz Navarrete Cindy Anadela, Avalos Latorre María Luisa
Fundación Universitaria Konrad Lorenz, Bogotá, Colombia.
Universidad de Guadalajara, Tonalá, JAL, México.
Behav Modif. 2025 May;49(3):293-316. doi: 10.1177/01454455251326880. Epub 2025 Mar 27.
The psychometric properties of the Reward Probability Index (RPI), which assesses environmental reward as an indirect measure of response-contingent positive reinforcement (RCPR), were estimated in a Mexican population. With the voluntary participation of 1297 adults, reliability was assessed, and evidence was collected regarding the internal structure and its relationship with emotional symptomatology and other variables. Good internal consistency indices (ω and α) were found for both the total scale and its dimensions. A two-dimensional structure, comprising Reward Probability and Environmental Suppressors, and a second-order factor consistent with RCPR theory, was confirmed. This model demonstrated measurement invariance across sex, mental health treatment status, and the presence or absence of emotional symptomatology. Consistent relationships were observed between RPI scores and emotional symptomatology, psychological inflexibility, and life satisfaction. Additionally, evidence was found supporting the criterion validity of the RPI in relation to depression. RPI is a psychometrically solid instrument, and its use is recommended in the Mexican population to account for environmental reward, utilizing a total score and by dimensions.
奖励概率指数（RPI）作为反应依存性正强化（RCPR）的间接测量方法，用于评估环境奖励。本研究在墨西哥人群中对其心理测量特性进行了评估。在1297名成年人自愿参与下，评估了该指数的信度，并收集了有关其内部结构以及与情绪症状和其他变量关系的证据。研究发现，总量表及其维度均具有良好的内部一致性指标（ω和α）。证实了由奖励概率和环境抑制因素组成的二维结构以及与RCPR理论一致的二阶因素。该模型在性别、心理健康治疗状况以及是否存在情绪症状方面均表现出测量不变性。研究观察到RPI得分与情绪症状、心理灵活性和生活满意度之间存在一致的关系。此外，还发现有证据支持RPI在抑郁症方面的效标效度。RPI是一种心理测量学上可靠的工具，建议在墨西哥人群中使用，通过总分和维度来考量环境奖励。
