We examine the fine structure of clausal right-node raising constructions in Japanese, and argue that there are sentences in which a tensed verb is right-node-raised out of coordinated tensed clauses as well as sentences in which a verb stem is right-node-raised out of coordinated tenseless phrases. In the latter case, the tense morpheme has to be assumed to take a tenseless complement clause, and we note that the existence of such a structure contradicts the so-called lexicalist hypothesis, according to which a verb stem and the tense morpheme immediately following it always form a morphosyntactic constituent.
(S. Yatabe and Kei Tanigawa, "The fine structure of clausal right-node raising constructions in Japanese," in Stefan Müller and Frank Richter, eds., Proceedings of the 25th International Conference on Head-driven Phrase Structure Grammar, CSLI, Stanford, 2018, pp. 176-196.)