Emotion reactivity refers to the activation, intensity and duration of emotional responses to internal or external stimuli. It can be differentiated from emotion regulation since the former is the very first response to an emotional trigger, and the latter can be defined as a tool for maintaining one's arousal in a window of tolerance. Since, to date, there are no Italian self-report measures able to evaluate individuals' emotional reactivity, this study aimed to contribute to the Italian validation of the Perth Emotional Reactivity Scale–Short Form (PERS-S). The PERS-S is an 18-item self-report measure answered on a 5-point Likert scale that generates six subscale scores and two composite scores, with higher scores indicating higher levels of reactivity. Data from 768 individuals showed that the PERS-S had good to excellent goodness of fit. The internal consistency was high, with an overall reliability coefficient (Cronbach's α) of .87 and .86 for the negative and positive general scales, respectively. The PERS-S also demonstrated appropriate convergent validity, showing significant correlations with conceptually related measures, and acceptable divergent validity, showing minimal correlations with unrelated constructs. Finally, we evaluated the Test–Retest Reliability by administering the PERS-S to the same sample twice, with a 2-week interval. The significant correlations between the two PERS-S administrations suggest temporal stability. The Italian version of the PERS-S will enrich the repertoire of self-report measures for investigating the development and risk factors of mental health disorders and may have practical applications in clinical settings.

中文翻译：

---

情绪反应性评估：珀斯情绪反应量表简表 (PERS-S) 的意大利验证

情绪反应性是指对内部或外部刺激的情绪反应的激活、强度和持续时间。它可以与情绪调节区分开来，因为前者是对情绪触发的第一反应，而后者可以被定义为在容忍窗口内维持一个人的唤醒的工具。由于迄今为止，意大利还没有能够评估个人情绪反应的自我报告措施，因此本研究旨在为意大利对珀斯情绪反应量表简表（PERS-S）的验证做出贡献。 PERS-S 是一项包含 18 项的自我报告测量，采用 5 点李克特量表进行回答，生成六个子量表分数和两个综合分数，分数越高表明反应水平越高。来自 768 名个体的数据表明，PERS-S 具有良好至极好的拟合优度。内部一致性很高，阴性和阳性一般量表的总体信度系数（Cronbach's α）分别为 0.87 和 0.86。 PERS-S 还表现出适当的收敛效度，显示出与概念相关测量的显着相关性，以及可接受的发散效度，显示出与不相关结构的最小相关性。最后，我们通过对同一样本两次（间隔两周）进行 PERS-S 来评估测试-重测可靠性。两次 PERS-S 管理之间的显着相关性表明时间稳定性。意大利版本的 PERS-S 将丰富用于调查精神健康障碍的发展和危险因素的自我报告措施的内容，并可能在临床环境中具有实际应用。