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使用当代的心理测量方法,构建一个简洁版本的心理应变量表
Xiaoyan Yuan1, Mengyun Hu1, Lianhui Wei1
1School of Nursing, Suzhou Medical College, Soochow University, Suzhou, China.
Journal of psychiatric research
|February 6, 2026
概括
使用古典测试理论和项目响应理论开发了一个新的20项心理应变量表 (PSS-20). 这种经过验证的尺度有效地测量了大学生心理压力.
科学领域:
- 心理评估 心理评估
- 教育心理学教育心理学
- 心理测量 心理测量 心理测量
背景情况:
- 最初的心理应变量表 (PSS-40) 是一个全面的测量方法.
- 需要一个更简洁,可靠和有效的心理压力评估工具.
研究的目的:
- 开发一个缩短版本的PSS-40,命名为PSS-20.
- 为了整合经典测试理论 (CTT) 和物品响应理论 (IRT) 进行尺度改进.
主要方法:
- 在10478名大学生中应用了PSS-40.
- 使用CTT (变量,相关性,因子分析,克朗巴赫α) 和IRT (Samejima分级响应模型) 进行项目分析.
- 根据CTT和IRT联合评估,选择了20个项目.
主要成果:
- 探索性因子分析显示,PSS-20项目具有较高的因子负载 (>0.6) 和累积差异 (>66%).
- 确认因素分析表明模型很适合 (RMESA=0.057,RMR=0.028). 这是一个很好的模型.
- PSS-20表现出卓越的可靠性 (克朗巴赫α=0.939) 和标准有效性 (0.558).
结论:
- PSS-20尺度是一个可靠和有效的仪器.
- PSS-20适用于评估大学生心理压力.
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