Luigi Rizzi (Collège de France) * Come Gianni contatterà Piero how Gianni contact.FUT.3SG Piero c. Perché Gianni contatterà Piero why Gianni contact.FUT.3SG Piero 'Why will Gianni contact Piero?' To account for this syntactic asymmetry Rizzi (2001a) proposed that, while other wh-elements are extracted from the IP, perché (why) is externally merged in the left periphery. More precisely, why is first merged in the Spec of Int(errogative), a dedicated left-peripheral position also hosting se (if), the marker of embedded yes/no questions. 1 Whereas other wh-elements target the lower Foc(us) position, which in turn attracts the inflected verb endowed with +Q,Int° is inherently endowed with +Q, hence it does not trigger movement of a verbal element to the left periphery. This captures the absence of obligatory inversion with why.1 See Shlonsky and Soare (2011) for a revised version of this analysis, according to which why is externally merged in the left periphery, but in a lower dedicated functional layer. In this analysis, why reaches its final position in Spec of Int via movement. Crucially, this approach maintains that why is not extracted from the IP since it is first merged in the left periphery.