The present article investigates a set of discourse connectors in the academic lecture genre from the viewpoint of the inseparable pair of pragmatics and cognition. Making use of the MICASE corpus for data retrieval, a selection of discourse constructions encoding comparative contrastive meanings are analysed and their distinctive features are critically described and explained. The aim is to show how each particular genre promotes the use of certain constructions. The MICASE database reveals that, among all the subgroups of complementary contrastive constructions, some seem incompatible with the academic lecture contexts by virtue of the particular characteristics of this specific genre
