Symptom Presence and Symptom Severity as Unique Indicators of Psychopathology: An Application of Multidimensional Zero-Inflated and Hurdle Graded Response Models.

IF 2.1 3区 心理学 Q2 MATHEMATICS, INTERDISCIPLINARY APPLICATIONS
Educational and Psychological Measurement Pub Date : 2022-10-01 Epub Date: 2021-12-26 DOI:10.1177/00131644211061820
Brooke E Magnus, Yang Liu
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引用次数: 1

Abstract

Questionnaires inquiring about psychopathology symptoms often produce data with excess zeros or the equivalent (e.g., none, never, and not at all). This type of zero inflation is especially common in nonclinical samples in which many people do not exhibit psychopathology, and if unaccounted for, can result in biased parameter estimates when fitting latent variable models. In the present research, we adopt a maximum likelihood approach in fitting multidimensional zero-inflated and hurdle graded response models to data from a psychological distress measure. These models include two latent variables: susceptibility, which relates to the probability of endorsing the symptom at all, and severity, which relates to the frequency of the symptom, given its presence. After estimating model parameters, we compute susceptibility and severity scale scores and include them as explanatory variables in modeling health-related criterion measures (e.g., suicide attempts, diagnosis of major depressive disorder). Results indicate that susceptibility and severity uniquely and differentially predict other health outcomes, which suggests that symptom presence and symptom severity are unique indicators of psychopathology and both may be clinically useful. Psychometric and clinical implications are discussed, including scale score reliability.

作为精神病理学独特指标的症状存在和症状严重程度:多维零充气和跨栏分级反应模型的应用。
询问精神病理学症状的问卷通常会产生超过零或等效的数据(例如,没有、从来没有、根本没有)。这种类型的零通货膨胀在非临床样本中尤其常见,在这些样本中,许多人没有表现出精神病理学,如果不清楚,在拟合潜在变量模型时可能会导致参数估计有偏差。在本研究中,我们采用了一种最大似然方法,将多维零膨胀和障碍分级反应模型拟合到心理痛苦测量的数据中。这些模型包括两个潜在变量:易感性,与认可症状的概率有关,严重程度,与症状出现的频率有关。在估计模型参数后,我们计算易感性和严重程度量表得分,并将其作为解释变量纳入健康相关标准测量建模中(例如,自杀未遂、重度抑郁障碍的诊断)。结果表明,易感性和严重程度对其他健康结果的预测具有独特和差异性,这表明症状存在和症状严重程度是精神病理学的独特指标,两者都可能在临床上有用。讨论了心理测量和临床意义,包括量表评分的可靠性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Educational and Psychological Measurement
Educational and Psychological Measurement 医学-数学跨学科应用
CiteScore
5.50
自引率
7.40%
发文量
49
审稿时长
6-12 weeks
期刊介绍: Educational and Psychological Measurement (EPM) publishes referred scholarly work from all academic disciplines interested in the study of measurement theory, problems, and issues. Theoretical articles address new developments and techniques, and applied articles deal with innovation applications.
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