Purpose

The purpose of this study is to evaluate the psychometric properties of each item in the Sport Spectator Identification Scale (SSIS) (Wann and Branscombe, 1993) using the item response theory (IRT) and to provide evidence for modifications in the scale.

Design/methodology/approach

A total of 635 spectators of US professional sports responded to the seven-item SSIS on an eight-point semantic differential scale. The general partial credit model was fitted to the data.

Findings

The results revealed that four items (Items 1, 2, 3 and 5) provide a relatively high amount of information, whereas three items (Items 4, 6 and 7) provide a low amount of information, indicating different levels of measurement precision among the items. Furthermore, the results showed that some low-level response options were rarely selected by participants, indicating that it may not be necessary to include response options as many as eight within each item.

Originality/value

Unlike previous studies examining the psychometric properties of the SSIS as a whole, the present study provides information about the usefulness of each item of the SSIS in measuring individuals' team identification. Based on the findings, the authors identified some issues with the three problematic items, including the wording of the items and the link between the question and the target construct. The authors make several suggestions for researchers and practitioners in improving individual item quality and in making informed decisions when using the SSIS in the future.

中文翻译：

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运动观众识别量表中的每个项目有用吗？：一个项目响应理论分析

目的

这项研究的目的是使用项目反应理论（IRT）评估运动观众识别量表（SSIS）（Wann和Branscombe，1993）中每个项目的心理计量学特性，并为该量表的修改提供证据。

设计/方法/方法

共有635名美国职业体育观众在八点语义差异量表上对七项SSIS做出了回应。通用部分信用模型已拟合到数据中。

发现

结果显示，四个项目（项目1、2、3和5）提供了相对大量的信息，而三个项目（项目4、6和7）提供了较少的信息，表明测量项目之间的测量精度水平不同项目。此外，结果表明，参与者很少选择一些低级别的响应选项，这表明在每个项目中可能不必包含多达八个的响应选项。

创意/价值

与先前研究整个SSIS的心理测量特性的研究不同，本研究提供有关SSIS的每个项目在衡量个人团队认同方面的有用性的信息。根据调查结果，作者确定了三个有问题的项目的一些问题，包括项目的措辞以及问题与目标结构之间的联系。作者为研究人员和从业人员提出了一些建议，以提高个人物品的质量并在将来使用SSIS时做出明智的决定。