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The impact of contamination bias when replicating maltreatment effects on child behavior problems

تأثیر سوگیری آلودگی در تکرار اثرات بدرفتاری بر مشکلات رفتاری کودکان

Anneke E. Olson, John Michael Felt, Noah Greifer, Zachary F. Fisher, Kenneth Shores, Nilám Ram, Chad E. Shenk

PLoS ONE 2026 Vol. 21(10), pp. e0358837
https://doi.org/10.1371/journal.pone.0358837

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چکیده

Background Contamination, when members of a comparison condition receive or are exposed to a treatment under investigation, can bias the direction, statistical significance, and magnitude of treatment effects. Objective This pre-registered study examined whether contamination biased estimates when replicating child maltreatment effects on two established outcomes, externalizing and internalizing behavior problems. Methods A multi-wave, U.S. national probability sample of children and families involved with child protective services ( N = 4000; Age = 0–17.5; Sex = 48% Female; Race = 60% White; Ethnicity = 30% Hispanic). Child maltreatment and comparison conditions were established using official case records and contamination was identified as caregiver-reported maltreatment for those children assigned to the comparison condition. Outcomes were 6-month frequencies of externalizing and internalizing behaviors, represented in T -scores, three years post-maltreatment exposure. Results The prevalence of contamination in this study was 96%. Propensity score analyses that ignored contamination revealed that maltreatment exposure had no impact on externalizing behaviors ( b = 0.28, p = .746) or internalizing behaviors ( b = 0.27, p = .744), failing to replicate prior research. However, propensity score analyses that corrected contamination replicated prior research by generating estimates that were in the expected directions, statistically significant, and moderate to large in effect magnitude for externalizing ( b = 8.72, p = .002, SMD = 0.74) and internalizing behavior problems ( b = 9.96, p < .001, SMD = 0.90). Conclusion Correcting contamination has the potential to improve the replication of child maltreatment effects, strengthening the generalizability of results.

چکیده به فارسی

زمینه: آلودگی، زمانی که اعضای گروه مقایسه، درمان مورد بررسی را دریافت می‌کنند یا در معرض آن قرار می‌گیرند، می‌تواند جهت، معناداری آماری و اندازه اثر درمان را دچار سوگیری کند. هدف: این مطالعه از پیش ثبت‌شده بررسی کرد که آیا آلودگی برآوردها را هنگام تکرار اثرات بدرفتاری کودک بر دو پیامد تثبیت‌شده، یعنی مشکلات رفتاری برونی‌سازی و درونی‌سازی، دچار سوگیری می‌کند یا خیر. روش‌ها: نمونه‌ای چندموجی و با احتمال ملی از کودکان و خانواده‌های درگیر با خدمات حمایت از کودک در ایالات متحده (N = 4000؛ سن = ۰ تا ۱۷/۵ سال؛ جنسیت = ۴۸٪ دختر؛ نژاد = ۶۰٪ سفید؛ قومیت = ۳۰٪ اسپانیایی‌تبار) مورد بررسی قرار گرفت. شرایط بدرفتاری کودک و گروه مقایسه با استفاده از سوابق رسمی پرونده‌ها تعیین شد و آلودگی به عنوان گزارش بدرفتاری توسط مراقب برای کودکانی که به گروه مقایسه اختصاص یافته بودند، شناسایی شد. پیامدها، فراوانی شش‌ماهه رفتارهای برونی‌سازی و درونی‌سازی، که به صورت نمرات T سه سال پس از مواجهه با بدرفتاری سنجیده شد، بودند. نتایج: شیوع آلودگی در این مطالعه ۹۶٪ بود. تحلیل‌های نمره تمایل که آلودگی را نادیده گرفتند، نشان دادند که مواجهه با بدرفتاری تأثیری بر رفتارهای برونی‌سازی (b = 0.28, p = .746) یا رفتارهای درونی‌سازی (b = 0.27, p = .744) ندارد و نتوانستند پژوهش‌های پیشین را تکرار کنند. با این حال، تحلیل‌های نمره تمایل که آلودگی را اصلاح کردند، پژوهش‌های پیشین را با ارائه برآوردهایی در جهت مورد انتظار، معنادار از نظر آماری و با اندازه اثر متوسط تا بزرگ برای مشکلات رفتاری برونی‌سازی (b = 8.72, p = .002, SMD = 0.74) و درونی‌سازی (b = 9.96, p < .001, SMD = 0.90) تکرار کردند. نتیجه‌گیری: اصلاح آلودگی می‌تواند تکرار اثرات بدرفتاری کودک را بهبود بخشد و قابلیت تعمیم نتایج را تقویت کند.

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موضوع‌ها و کلیدواژه‌ها

درمانکودکانchild abusePropensity score matchingchild behavior problemschild protection servicescontamination biasexternalizing problemsinternalizing problemsreplication

ارجاع

Olson, A. E., Felt, J. M., Greifer, N., Fisher, Z. F., Shores, K., Ram, N., & Shenk, C. E. (2026). The impact of contamination bias when replicating maltreatment effects on child behavior problems. PLoS ONE, 21(10), e0358837. https://doi.org/10.1371/journal.pone.0358837

(Olson et al., 2026)

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قوانین پرسش و گفتگو
  1. با احترام و بدون توهین، تحقیر، برچسب‌زنی یا حمله‌ی شخصی با دیگران گفتگو کنید.
  2. از نوشتن هرگونه اطلاعات هویتی یا قابل‌شناسایی مراجعان، بیماران یا اشخاص ثالث، از جمله نام، شماره‌ی تماس، تصویر، نشانی، محل کار یا جزئیات منحصربه‌فرد پرونده خودداری کنید.
  3. اگر درباره‌ی یک تجربه‌ی بالینی سؤال می‌کنید، اطلاعات را تا حد ممکن بی‌نام و کلی بیان کنید تا امکان شناسایی فرد وجود نداشته باشد.
  4. این بخش برای یادگیری و گفت‌وگوی علمی است و جایگزین ارزیابی، تشخیص، مشاوره یا روان‌درمانی شخصی نیست.
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  6. انتشار تبلیغات، معرفی خدمات شخصی، شماره‌ی تلفن، شناسه‌ی شبکه‌های اجتماعی، پیوند تبلیغاتی یا درخواست جذب مراجع در این بخش مجاز نیست.
  7. در بیان ادعاهای علمی، به‌ویژه درباره‌ی اثربخشی درمان‌ها، تشخیص یا یافته‌های پژوهشی، تا حد امکان نام منبع معتبر، مقاله یا راهنمای علمی را ذکر کنید.
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  9. پاسخ‌هایی که کارشناسان فکر بنیان می‌دهند با برچسب «پاسخ فکر بنیان» یا «کارشناس فکر بنیان» نمایش داده می‌شوند و سایر نوشته‌ها بیانگر نظر کاربران هستند.
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