 Specification Tests for Temporal Heterogeneity in Spatial Panel Data Models with Fixed EffectsYuhong Xu and Zhenlin Yang Regional Science and Urban Economics, 2020, vol. 81, issue C Abstract: We propose adjusted quasi score (AQS) tests for testing the existence of temporal heterogeneity in slope and spatial parameters in spatial panel data (SPD) models, allowing for the presence of individual-specific and/or time-specific fixed effects (or in general intercept heterogeneity). The SPD model with spatial lag is treated in detail by first considering the model with individual fixed effects only, and then extending it to the model with both individual and time fixed effects. Two types of AQS tests (naïve and robust) are proposed, and their asymptotic properties are presented. These tests are then fully extended to SPD models with both spatial lag and spatial error. Monte Carlo results show that the robust tests have much superior finite and large sample properties than the naive tests. Thus, the proposed robust tests provide reliable tools for identifying possible existence of temporal heterogeneity in regression and spatial coefficients. Empirical applications of the proposed tests are given. Keywords: Spatial panels; Fixed effects; Time-varying covariate effects; Time-varying spatial effects; Change points (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:regeco:v:81:y:2020:i:c:s0166046219300328 DOI: 10.1016/j.regsciurbeco.2019.103488 Access Statistics for this article Regional Science and Urban Economics is currently edited by D.P McMillen and Y. Zenou More articles in Regional Science and Urban Economics from Elsevier |
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