Add to ORKGBased on evidence from Italo-Romance, in this article I argue that lexical interjections can be split into three categories, depending on whether they must, they can or they cannot be integrated with the associated clause; the degree of integration with the co-occurring clause depends on the merge position of the interjection. Only interjections lexicalizing the functional head SpeechAct° represent autonomous linguistic acts and are therefore prosodically and syntactically independent from the associated clause; from this position they can attract the associated clause to the corresponding specifier position or raise to the adjacent head Speaker° in order to provide the necessary contextual anchoring. Interjections lexicalizing the lower pr...