Although there is increasing attention for the interrelationship between obsessive–compulsive personality disorder (OCPD) and obsessive–compulsive disorder (OCD), their shared characteristics in terms of childhood trait antecedents remain understudied. Perfectionism may be a viable candidate trait antecedent, given its role in the clinical manifestation of both OCPD and OCD in adulthood, and the evidence that perfectionism reflects a dispositional tendency observable from childhood onwards. However, little is known about childhood trajectories of perfectionism with prospective links to later OCPD versus OCD. Using latent growth curve modeling, this study explored the baseline and growth of childhood perfectionism in 485 community and referred children (55.5% girls, 7.17–14.78 years old, Mage = 10.74, SD = 1.50) across three waves. Adolescent OCPD traits and OCD symptoms were measured in Wave 4. An overall decreasing trend of perfectionism from childhood through adolescence appeared, without inter-individual differences in growth. Individual differences in baseline levels of childhood perfectionism were significant, and equally predicting adolescent OCPD and OCD outcomes. At a more specific level, childhood perfectionism predicted most strongly the rigid perfectionism component of OCPD, and the orderliness/cleanliness/perfectionism and obsession domain of OCD. This demonstrates the value of childhood perfectionism for understanding differential outcomes of adolescent OCPD traits and OCD symptoms.

尽管人们越来越关注强迫性人格障碍（OCPD）和强迫症（OCD）之间的相互关系，但它们在童年特征前因方面的共同特征仍未得到充分研究。鉴于完美主义在成年期 OCPD 和 OCD 的临床表现中的作用，以及完美主义反映了从童年开始就可以观察到的性格倾向的证据，完美主义可能是一个可行的候选特征。然而，关于完美主义的童年轨迹与后来的 OCPD 与 OCD 的预期联系知之甚少。本研究使用潜在增长曲线模型，探索了 485 个社区和转介儿童（55.5% 的女孩，7.17-14.78 岁，M年龄）中儿童完美主义的基线和成长= 10.74，SD = 1.50）跨越三个波。在第 4 波中测量了青少年 OCPD 特征和强迫症症状。从童年到青春期出现了完美主义的总体下降趋势，但没有个体间的成长差异。儿童完美主义基线水平的个体差异显着，并且同样可以预测青少年 OCPD 和 OCD 结果。在更具体的层面上，童年完美主义最强烈地预测了强迫症的严格完美主义成分，以及强迫症的有序/清洁/完美主义和痴迷领域。这证明了儿童完美主义对于理解青少年 OCPD 特征和 OCD 症状的不同结果的价值。