Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, United States of America.
Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Barcelona, Spain.
PLoS One. 2020 Aug 10;15(8):e0237614. doi: 10.1371/journal.pone.0237614. eCollection 2020.
The present study employed structured diagnostic interviews to assess the construct validity of the brief version of the Multidimensional Schizotypy Scale (MSS-B), which was developed to assess positive, negative, and disorganized dimensions of schizotypy. It was hypothesized that the MSS-B subscales would be associated with differential patterns of symptoms and impairment, comparable to findings for the full-length MSS. A total of 177 young adults completed structured diagnostic interviews assessing symptoms and impairment. As hypothesized, MSS-B positive schizotypy was significantly associated with interview ratings of positive (psychotic-like) symptoms, as well as schizotypal and paranoid personality disorder traits. MSS-B negative schizotypy was associated with interview ratings of negative symptoms, as well as schizoid, paranoid, and schizotypal traits. Furthermore, negative schizotypy predicted Cluster A personality disorder diagnoses. MSS-B disorganized schizotypy was associated with interview ratings of disorganized symptoms. All three schizotypy dimensions were associated with impaired functioning. This was the first study to evaluate the validity of the MSS-B using interview measures, and the pattern of findings for each MSS-B subscale was closely comparable to the findings for the full-length MSS. Contrary to our hypothesis, cannabis use was largely unassociated with psychotic-like symptoms and did not moderate the expression of the schizotypy dimensions. The MSS-B has good psychometric properties, high concordance with the full-length MSS, and good construct validity. Thus, it appears to be a promising brief alternative to traditional schizotypy measures.
本研究采用结构诊断访谈来评估多维精神分裂症量表简式版（MSS-B）的建构效度，该量表旨在评估精神分裂症的阳性、阴性和紊乱维度。研究假设 MSS-B 分量表将与症状和障碍的不同模式相关，与全长 MSS 的发现相当。共有 177 名年轻成年人完成了评估症状和障碍的结构化诊断访谈。正如假设的那样，MSS-B 的阳性精神分裂症与访谈评定的阳性（类精神病）症状以及精神分裂症和偏执型人格障碍特征显著相关。MSS-B 的阴性精神分裂症与访谈评定的阴性症状以及分裂型、偏执型和精神分裂症特征相关。此外，阴性精神分裂症预测了 A 类人格障碍诊断。MSS-B 的紊乱精神分裂症与访谈评定的紊乱症状相关。所有三个精神分裂症维度都与功能障碍有关。这是第一项使用访谈测量评估 MSS-B 有效性的研究，每个 MSS-B 分量表的发现模式与全长 MSS 的发现非常相似。与我们的假设相反，大麻使用与类精神病症状的相关性不大，也没有调节精神分裂症维度的表达。MSS-B 具有良好的心理计量学特性、与全长 MSS 的高度一致性和良好的建构效度。因此，它似乎是传统精神分裂症测量的一种很有前途的简短替代方法。
