A primary methodological weakness of the single‐case experimental design (SCED) outcome studies conducted of the treatment of personality disorder with cognitive analytic therapy (CAT) is that they have failed to employ a withdrawal phase or cross‐over design and so are deemed quasi‐experimental. This study sought to implement a withdrawal design, in order to improve the internal validity of the study to make it a true SCED, and also in order to enable the patient to explore abandonment dynamics.

中文翻译：

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边缘型人格障碍认知分析疗法的有效性：利用戒断实验设计提高对被遗弃的敏感性

用认知分析疗法 (CAT) 治疗人格障碍的单病例实验设计 (SCED) 结果研究的主要方法学缺陷是它们未能采用退出阶段或交叉设计，因此被视为准-实验性的。本研究试图实施戒断设计，以提高研究的内部有效性，使其成为真正的 SCED，并让患者探索放弃动态。