This paper obtains the joint and conditional Lagrange multiplier (LM) tests for a spatial lag regression model with spatial auto-regressive error derived in Anselin (Reg Sci Urban Ecom 26:77–104, <CitationRef CitationID="CR5">1996</CitationRef>) using artificial double length regressions (DLR). These DLR tests and their corresponding LM...</citationref>

Building on the work of Lustbader and Moolgavkar (1985, 'A Diagnostic Statistic for the Score Test', Journal of the American Statistical Association 80, 375-379), this paper studies influence diagnostics for score tests. The diagnostic proposed by Lustbader and Moolgavkar is reassessed and...