Brooks Kelly Jack Lee, Sullivan Karen A
School of Psychology and Counselling, Queensland University of Technology, Brisbane, QLD, Australia.
Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.
Clin Neuropsychol. 2023 Jan;37(1):207-226. doi: 10.1080/13854046.2021.1942555. Epub 2021 Aug 4.
Response distortions in the reporting of postconcussion symptoms can occur for many reasons. The Rivermead Post-concussion Symptoms Questionnaire (RPQ) was recently modified to include an embedded symptom validity indicator to test for atypical symptoms. The present study used a simulation design to investigate the psychometric properties of the modified RPQ (mRPQ).
298 adult volunteers were randomised into three groups: honest responding (Controls, C) who reported actual, current symptoms; mild traumatic brain injury (mTBI) simulators (MS) who role played being injured, and; biased mTBI simulators (BMS) who role played being injured and were asked to bias (exaggerate) their response. The MS and BMS participants received instructions to support the simulation. All participants completed the mRPQ and a modified Neurobehavioral Symptom Inventory (mNSI).
A 2 × 3 mixed ANOVA with one within-group variable (Symptom type: Standard or Atypical) and one between-group variable (Instruction type: C, MS, BMS) found a significant two-way interaction (p < .05, ηp2 = .08).
The BMS group had score elevations for both standard and atypical postconcussion symptoms; therefore, both symptom types should be considered when evaluating for biased responding. The mRPQ has promising psychometric properties and should be further developed.
脑震荡后症状报告中的反应偏差可能由多种原因引起。最近对里弗米德脑震荡后症状问卷（RPQ）进行了修改，纳入了一个嵌入式症状效度指标，以检测非典型症状。本研究采用模拟设计来调查修改后的RPQ（mRPQ）的心理测量特性。
298名成年志愿者被随机分为三组：如实报告组（对照组，C），报告实际的当前症状；轻度创伤性脑损伤（mTBI）模拟组（MS），模拟受伤情况；有偏差的mTBI模拟组（BMS），模拟受伤情况并被要求给出有偏差（夸大）的回答。MS组和BMS组的参与者接受了支持模拟的指导。所有参与者都完成了mRPQ和修改后的神经行为症状量表（mNSI）。
一项2×3混合方差分析，其中一个组内变量（症状类型：标准或非典型）和一个组间变量（指导类型：C、MS、BMS）发现了显著的双向交互作用（p <.05，ηp2 =.08）。
BMS组在标准和非典型脑震荡后症状上的得分均有所升高；因此，在评估有偏差的反应时应同时考虑这两种症状类型。mRPQ具有良好的心理测量特性，应进一步开发。
