Generalized Varying Coefficient Mediation Models

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Jingyuan Liu, Yujie Liao, Runze Li
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引用次数: 0

Abstract

Motivated by an analysis of causal mechanism from economic stress to entrepreneurial withdrawals through depressed affect, we develop a two-layer generalized varying coefficient mediation model. This model captures the bridging effects of mediators that may vary with another variable, by treating them as smooth functions of this variable. It also allows various response types by introducing the generalized varying coefficient model in the first layer. The varying direct and indirect effects are estimated through spline expansion. The theoretical properties of the estimated direct and indirect coefficient functions including estimation biases, asymptotic distributions and so forth, are explored. Simulation studies validate the finite-sample performance of the proposed estimation method. A real data analysis based on the proposed model discovers some interesting behavioral economic phenomenon, that self-efficacy influences the deleterious impact of economic stress, both directly and indirectly through depressed affect, on business owners’ withdrawal intentions.

Abstract Image

广义可变系数中介模型
在分析经济压力通过抑郁情绪导致创业者退出的因果机制的基础上,我们建立了一个双层广义变化系数中介模型。该模型将可能随另一变量变化的中介因子视为该变量的平滑函数,从而捕捉到中介因子的桥接效应。同时,通过在第一层引入广义变化系数模型,该模型还允许多种反应类型。变化的直接和间接效应通过样条展开进行估算。对估算出的直接和间接系数函数的理论属性进行了探讨,包括估算偏差、渐近分布等。模拟研究验证了所提估算方法的有限样本性能。基于所提模型的真实数据分析发现了一些有趣的行为经济学现象,即自我效能感会直接或间接地通过抑郁情绪影响经济压力对企业主退出意愿的有害影响。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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