Validity of Attention Bias Variability Indices for Posttraumatic Stress Disorder Research: Evidence From Patient Data.

Abstract:

:Although initial findings indicated that threat-related attention bias variability (ABV), an index designed to capture dynamic shifts in threat-related attention over time, was positively correlated with the severity of posttraumatic stress disorder (PTSD) symptoms, a recent study relying on simulated data has raised questions regarding the validity and empirical utility of ABV. Specifically, the simulations suggested that core features of reaction time data distinct from threat-related attention bias, such as the reaction time standard deviation and mean, could explicate the reported elevated ABV among samples with PTSD. In the present study, we evaluated these suggestions in 95 PTSD-diagnosed participants. The results showed that ABV significantly and uniquely predicted PTSD symptom severity beyond the predictive value of core reaction time features, ΔR2 = .05-.23. Some of the predictions stemming from the simulated results were replicated, whereas others were not. Contrary to the conclusion drawn from the simulated data, the results from the current study suggest that ABV is a valid and replicable correlate of PTSD symptom severity. :Spanish Abstracts by Asociación Chilena de Estrés Traumático (ACET) La validez de los índices de variabilidad del sesgo de atención para la investigación del TEPT: Evidencia sobre los datos de los pacientes VALIDEZ DE LA VARIABILIDAD DEL SESGO ATENCIONAL EN EL TEPT Aunque los hallazgos iniciales indicaron que la variabilidad del sesgo de atención (ABV en su sigla en inglés) relacionada con la amenaza, un índice diseñado para capturar cambios dinámicos en la atención relacionada con la amenaza a lo largo del tiempo, que se correlacionó positivamente con la gravedad de los síntomas del trastorno de estrés postraumático (TEPT), un estudio reciente basado en datos simulados ha planteado preguntas sobre la validez y la utilidad empírica del ABV. Específicamente, las simulaciones sugirieron que las características centrales de los datos del tiempo de reacción distintas del sesgo de atención relacionado con la amenaza, como la desviación estándar y la media del tiempo de reacción, podrían explicar el aumento del ABV reportado entre las muestras con el TEPT. En el presente estudio, evaluamos estas sugerencias en 95 participantes con diagnóstico del TEPT. Los resultados mostraron que ABV predijo de manera significativa y única la gravedad de los síntomas del TEPT más allá del valor predictivo de las características centrales del tiempo de reacción, ΔR2 = .05 - .23. Algunas de las predicciones derivadas de los resultados simulados se replicaron, mientras que otras no. Contrariamente a la conclusión extraída de los datos simulados, los resultados del estudio actual sugieren que la ABV es un correlato válido y replicable de la gravedad de los síntomas del TEPT. :Traditional and Simplified Chinese Abstracts by the Asian Society for Traumatic Stress Studies (AsianSTSS) 簡體及繁體中文撮要由亞洲創傷心理研究學會翻譯 Validity of Attention Bias Variability Indices for PTSD Research: Evidence from Patient Data Traditional Chinese 標題: PTSD研究中, 注意力偏誤變異性指數的效度:患者數據提供的證據 撮要: 威脅相關的注意力偏誤變異性(ABV), 乃標示威脅相關的注意力隨時間所生的互動變化的指數。雖然初期的研究發現, ABV與創傷後壓力症(PTSD)症狀嚴重度有正向關連, 但近期一個採用模擬數據的研究卻令人質疑ABV的效度和實證功用。那些模擬數據特別地反映, 跟威脅相關的注意力偏誤相異的反應時間數據的核心特徵, 例如反應時間的標準差和中位數, 可以解釋患PTSD的樣本中ABV提升的情況。本研究透過95名被診斷出患PTSD的樣本, 檢視以上論點。結果顯示, ABV顯著而且獨特地預測到PTSD症狀嚴重度, 程度超越反應時間核心特徵的預測值(ΔR2 = .05-.23)。是次研究重複了部分早前基於模擬數據所得的預測。然而, 與從模擬數據所得的結論不同, 是次研究結果反映, ABV對PTSD症狀來說是有效及具可重複性的相關因素。 Simplified Chinese 标题: PTSD研究中, 注意力偏误变异性指数的效度:患者数据提供的证据 撮要: 威胁相关的注意力偏误变异性(ABV), 乃标示威胁相关的注意力随时间所生的互动变化的指数。虽然初期的研究发现, ABV与创伤后压力症(PTSD)症状严重度有正向关连, 但近期一个采用仿真数据的研究却令人质疑ABV的效度和实证功用。那些仿真数据特别地反映, 跟威胁相关的注意力偏误相异的反应时间数据的核心特征, 例如反应时间的标准偏差和中位数, 可以解释患PTSD的样本中ABV提升的情况。本研究透过95名被诊断出患PTSD的样本, 检视以上论点。结果显示, ABV显著而且独特地预测到PTSD症状严重度, 程度超越反应时间核心特征的预测值(ΔR2 = .05-.23)。是次研究重复了部分早前基于仿真数据所得的预测。然而, 与从仿真数据所得的结论不同, 是次研究结果反映, ABV对PTSD症状来说是有效及具可重复性的相关因素。.

journal_name

J Trauma Stress

authors

Alon Y,Naim R,Pine DS,Bliese PD,Bar-Haim Y

doi

10.1002/jts.22443

subject

Has Abstract

pub_date

2019-10-01 00:00:00

pages

791-798

issue

5

eissn

0894-9867

issn

1573-6598

journal_volume

32

pub_type

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