We aimed to identify empirically valid cut scores on the positive behavioral interventions and supports (PBIS) Tiered Fidelity Inventory (TFI) through an expert panel process known as bookmarking. The TFI is a measurement tool to evaluate the fidelity of implementation of PBIS. In the bookmark method, experts reviewed all TFI items and item scores by difficulty in order estimated by an item response theory (IRT) model of TFI data. Over two sessions involving data review and discussion, panelists individually identified which corresponding cut scores in each TFI tier scale indicated minimally adequate fidelity in the TFI, leading to corresponding scores of 83.3% for TFI Tier 1, 84.6% for TFI Tier 2, and 82.4% for TFI Tier 3. Then, the proposed cut scores were compared with the original cut scores of 70% for percentage of schools meeting fidelity and the association between the cut scores and school discipline outcomes using an extant sample. The results of descriptive statistics and multiple t-tests suggested that the bookmark cut score in TFI Tier 1 was reachable and more strongly associated with improved school discipline outcomes. Findings for TFI Tier 2 and Tier 3 were less conclusive.

中文翻译：

---

通过书签过程实证得出积极行为干预和支持 （PBIS） 分层保真度量表 （TFI） 的分数线


我们旨在通过称为书签的专家小组过程确定积极行为干预和支持 （PBIS） 分层保真度量表 （TFI） 的经验有效分数。TFI 是一种衡量 PBIS 实施保真度的测量工具。在书签方法中，专家按 TFI 数据的项目反应理论 （IRT） 模型估计的顺序审查了所有 TFI 项目和项目分数。在涉及数据审查和讨论的两次会议中，小组成员分别确定了每个TFI 等级量表中哪些相应的切割分数表明TFI的保真度最低限度，因此TFI Tier 1的相应得分为83.3%，TFI Tier 2的相应得分为84.6%，TFI Tier 3的相应得分为82.4%。然后，使用现有样本将拟议的分数线与原始 70% 的分数线进行比较，以了解达到保真度的学校百分比以及分数线与学校纪律结果之间的关联。描述性统计和多个 t 检验的结果表明，TFI Tier 1 的书签分数是可以达到的，并且与学校纪律结果的改善更密切相关。TFI 2 级和 3 级的结果不太确定。