%0 Conference Proceedings %T Is this Sentence Difficult? Do you Agree? %A Brunato, Dominique %A De Mattei, Lorenzo %A Dell’Orletta, Felice %A Iavarone, Benedetta %A Venturi, Giulia %Y Riloff, Ellen %Y Chiang, David %Y Hockenmaier, Julia %Y Tsujii, Jun’ichi %S Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing %D 2018 %8 oct nov %I Association for Computational Linguistics %C Brussels, Belgium %F brunato-etal-2018-sentence %X In this paper, we present a crowdsourcing-based approach to model the human perception of sentence complexity. We collect a large corpus of sentences rated with judgments of complexity for two typologically-different languages, Italian and English. We test our approach in two experimental scenarios aimed to investigate the contribution of a wide set of lexical, morpho-syntactic and syntactic phenomena in predicting i) the degree of agreement among annotators independently from the assigned judgment and ii) the perception of sentence complexity. %R 10.18653/v1/D18-1289 %U https://aclanthology.org/D18-1289 %U https://doi.org/10.18653/v1/D18-1289 %P 2690-2699