Development and Validation of the Informal Supporter Readiness Inventory (ISRI)

Objective: This article outlines the development and validation of the Informal Supporter Readiness Inventory (ISRI), based on the model developed by the present authors in Davies et al. (2023). This scale assesses the readiness of informal supporters to intervene or provide support in situations of intimate partner violence (IPV). Methods: The research followed a three-phased procedure of item development, scale development, and scale evaluation; adhering to best practice guidelines for psychometric development and validation. This process provided empirical substantiation for the domains of the Model of Informal Supporter Readiness (Davies et al., 2023). Results: The 57-item ISRI incorporates four primary factors: normative, individual, goodman-emotional, and situational-assessment. These factors demonstrated robust internal consistency and factor structures. Additionally, the ISRI evidenced strong test-retest reliability, and both convergent and divergent validity. Although aligning closely with the Model of Informal Supporter Readiness, the scale revealed a nuanced bifurcation of situational factors into situational-emotional and situational-assessment. Discussion: The ISRI offers an important advancement in IPV research by highlighting the multifaceted nature of informal supporter intervention. The findings have several implications, from tailoring individualised supportive interventions to strengthening support networks and empowering survivors. The present study’s findings underscore the potential of adopting a social network-oriented approach to interventions in IPV scenarios. Applications for research and practice are discussed.

研究目标：本文基于作者团队在Davies等人（2023）研究中提出的模型，阐述了非正式支持者准备量表（Informal Supporter Readiness Inventory, ISRI）的开发与验证流程。该量表用于评估非正式支持者在亲密伴侣暴力（intimate partner violence, IPV）情境中进行干预或提供支持的准备程度。
研究方法：本研究遵循心理测量学开发与验证的最佳实践指南，采用题项开发、量表构建、量表评估三阶段研究流程。该过程为《非正式支持者准备模型》（Davies等人，2023）的各维度提供了实证依据。
研究结果：包含57个题项的ISRI涵盖四大核心因子：规范性、个体性、古德曼-情感性及情境评估。各因子均表现出良好的内部一致性与因子结构。此外，ISRI具备优异的重测信度，以及良好的会聚效度与区分效度。尽管该量表与《非正式支持者准备模型》契合度较高，但研究发现情境因子可细分为情境情感维度与情境评估维度，呈现出细微的分化特征。
讨论：ISRI的研发推动了亲密伴侣暴力领域的研究进展，凸显了非正式支持者干预行为的多面性。本研究结果具有多重实践意义，既可为定制个性化支持干预方案提供参考，也有助于强化支持网络建设、赋能暴力幸存者。本研究结果进一步证实，在亲密伴侣暴力干预中采用社会网络导向的干预方案具有可行性。本文最后探讨了该量表在研究与实践中的应用方向。