This book puts together a selection of papers presented at The Romance Turn V Workshop, held in Lisbon in 2012. The papers presented at the workshop discussed general problems in the field of Language Acquisition, with a special focus on data from several Romance varieties.The papers in the volume cover a wide array of topics and subfields of acquisition studies, including L1 and L2 acquisition, typical and atypical development, acquisition of syntax, semantics, and phonology.