Using a sample of firms from France, where the law requires the use of two auditors, we study the effect of auditor pair composition on audit quality by examining a specific account, goodwill impairment. We document that firms audited by a Big 4-non-Big 4 auditor pair (BS) are more likely to book an impairment and book a larger impairment than firms audited by a Big 4-Big 4 auditor pair (BB) when low-performance indicators suggest a greater likelihood of impairment. Moreover, firms audited by a BB pair reduce impairment disclosures when they book impairments, while firms audited by a BS pair do not, suggesting lower transparency for firms audited by a BB pair. Our results inform investors and firms in mandatory joint audit regimes, as well as regulators who are considering requiring joint audits.Incidence de la composition du coll ege d'auditeurs sur la qualit e de l'audit conjoint : le cas des tests de d epr eciation
R ESUM ELes auteurs etudient l'incidence de la composition du coll ege d'auditeurs sur la qualit e de l'audit conjoint en s'int eressant plus particuli erement aux tests de d epr eciation de l' ecart d'acquisition. L' etude est men ee sur un echantillon de soci et es franc ßaises pour lesquelles la r eglementation impose un audit conjoint.