Template-Type: ReDIF-Paper 1.0 Author-Name: Marco Guerzoni Author-X-Name-First: Marco Author-X-Name-Last: Guerzoni Author-Email: marco.guerzoni@unimib.it Author-Workplace-Name: DEMS, Università di Milano-Bicocca, Milano, Italy - BETA, University of Strasbourg, France Author-Name: Luigi Riso Author-X-Name-First: Luigi Author-X-Name-Last: Riso Author-Email: luigi.riso@unicatt.it Author-Workplace-Name: Dipartimento di Politica Economica, DISCE, Università Cattolica del Sacro Cuore, Milano, Italy Author-Name: Marco Vivarelli Author-X-Name-First: Marco Author-X-Name-Last: Vivarelli Author-Email: marco.vivarelli@unicatt.it Author-Workplace-Name: Dipartimento di Politica Economica, DISCE, Università Cattolica del Sacro Cuore, Milano, Italy – UNU-MERIT, Maastricht, The Netherlands – IZA, Bonn, Germany Title: Was Robert Gibrat right? A test based on the graphical model methodology Abstract: Using both regression analysis and an unsupervised graphical model approach (never applied before to this issue), we confirm the rejection of the Gibrat’s law when our firm-level data are considered over the entire investigated period, while the opposite is true when we allow for market selection. Indeed, the growth behavior of the re-shaped (smaller) population of the survived most efficient firms is in line with the Law of Proportionate Effect; this evidence reconciles early and current literature testing Gibrat’s law and may have interesting implications in terms of both applied and theoretical research. Length: 22 Creation-Date: 2023-03 File-URL: http://dipartimenti.unicatt.it/politica-economica-DIPE0031.pdf File-Format: Application/pdf File-Function: First version, 2023 Number: dipe0031 Classification-JEL: L11 Keywords: Gibrat’s Law, firm survival, market selection, firm growth Handle: RePEc:ctc:serie5:dipe0031