The Posttrauma Risky Behaviors Questionnaire (PRBQ) assesses extent of engagement in posttrauma reckless and self-destructive behaviors (RSDBs). Given PRBQ’s recent development with limited psychometric investigations, we used item response theory to examine (a) item analysis, (b) person fit, and (c) differential item functioning (DIF) across gender-based groups and two different samples. One sample included 464 participants reporting potentially traumatic experiences (Mechanical Turk [MTurk], recruited online), and the other sample included 171 trauma-exposed women reporting current intimate partner violence and substance use (recruited in-person). All PRBQ items contributed to the RSDB scale, and all PRBQ items and the PRBQ scale provided maximum information for high levels of the RSDB latent trait. Seven and 11 items were conceptualized as low information items in the MTurk and intimate partner violence samples, respectively. Eight MTurk participants’ responses did not fit the overall pattern of responses as expected. Seven items were flagged for DIF between the two samples, and eight items were flagged for DIF between men and women in the MTurk sample. However, all effect sizes were <8%. Conclusively, results suggest good psychometric properties for the PRBQ and support its use to compare RSDBs across different samples and gender-based groups.

创伤后风险行为问卷 (PRBQ) 评估参与创伤后鲁莽和自毁行为 (RSDB) 的程度。鉴于 PRBQ 最近在心理测量调查方面的发展有限，我们使用项目反应理论来检查 (a) 项目分析、(b) 个人适合度和 (c) 跨性别群体和两个不同样本的差异项目功能 (DIF)。一个样本包括 464 名报告潜在创伤经历的参与者（Mechanical Turk [MTurk]，在线招募），另一个样本包括 171 名遭受创伤的女性，报告当前亲密伴侣暴力和药物使用（亲自招募）。所有 PRBQ 项目都对 RSDB 量表有贡献，所有 PRBQ 项目和 PRBQ 量表都为高水平的 RSDB 潜在性状提供了最大的信息。在 MTurk 和亲密伴侣暴力样本中，7 个和 11 个项目分别被概念化为低信息项目。八名 MTurk 参与者的反应并不符合预期的整体反应模式。两个样本之间有 7 个项目被标记为 DIF，MTurk 样本中男性和女性之间有 8 个项目被标记为 DIF。然而，所有效应量均<8%。最后，结果表明 PRBQ 具有良好的心理测量特性，并支持将其用于比较不同样本和基于性别的群体的 RSDB。在 MTurk 样本中，有 8 个项目被标记为男性和女性之间的 DIF。然而，所有效应量均<8%。最后，结果表明 PRBQ 具有良好的心理测量特性，并支持将其用于比较不同样本和基于性别的群体的 RSDB。在 MTurk 样本中，有 8 个项目被标记为男性和女性之间的 DIF。然而，所有效应量均<8%。最后，结果表明 PRBQ 具有良好的心理测量特性，并支持将其用于比较不同样本和基于性别的群体的 RSDB。