The socio-pragmatic phenomenon of academic conflict (AC) is here addressed from a cross-cultural and diachronic perspective, and is examined by combining a quantitative approach and a qualitative discoursal analysis of its salient rhetorical features in a corpus of Spanish, French and English medical articles published between 1930 and 1995. The speech acts that conveyed AC were recorded in each paper and classified into 2 categories according to their level of commitment (direct author's involvement) or detachment (hedginess and AC responsibility shifting). The quantitative results were analyzed by means of the Chi-square test. Our overall findings indicate that French and Spanish scientists tend to be not only more critical, but also more authoritarian and passionate in the formulation of their AC than their Anglo-Saxon counterparts. However, when analyzed diachronically, our results indicate that from the 1990s on, the rhetorical behavior of