Clinical Psychology Center, 38006National Taiwan University Hospital, Taipei, Taiwan.
Department of Psychology, 34913National Chengchi University, Taipei, Taiwan.
Am J Alzheimers Dis Other Demen. 2021 Jan-Dec;36:15333175211038237. doi: 10.1177/15333175211038237.
Subjective cognitive decline (SCD) has been considered a high-risk group preceding mild cognitive impairment (MCI). However, methods to quantify and track the complaints have not been well-established. The present study aimed to develop a questionnaire tailored for Mandarin-speaking individuals with SCD. A total of 175 adults aged above 55 years completed a comprehensive set of items evaluating cognitive problems and neuropsychological examinations. After item reduction, internal consistency, construct, and concurrent validity were examined. The 14-item Subjective Cognitive Decline Scale (SCDS) has acceptable internal consistency (Cronbach's = .93) and construct validity with a three-factor structure. Individuals with SCD and MCI scored higher than the control group. The SCDS demonstrated significant but small correlations with multiple cognitive tests and emotional variables. The SCDS provides an alternative approach to measure cognitive complaints, while an influence of emotional status shall be taken into consideration when interpreting the results.
主观认知衰退（SCD）被认为是轻度认知障碍（MCI）之前的高风险群体。然而，量化和跟踪这些主诉的方法尚未得到很好的建立。本研究旨在为讲普通话的 SCD 个体开发一种量身定制的问卷。共有 175 名年龄在 55 岁以上的成年人完成了一套评估认知问题和神经心理学检查的综合项目。经过项目删减，对内部一致性、结构和同时效度进行了检验。14 项主观认知衰退量表（SCDS）具有可接受的内部一致性（Cronbach's =.93）和结构效度，具有三因素结构。SCD 和 MCI 个体的得分高于对照组。SCDS 与多项认知测试和情绪变量呈显著但较小的相关性。SCDS 提供了一种衡量认知主诉的替代方法，但在解释结果时应考虑情绪状态的影响。
