The 2012 Second Language Research Forum was hosted jointly by the University of Pittsburgh and Carnegie Mellon University from October 18-21, 2012, with the theme "Building Bridges Between SLA in Many Contexts." This volume contains 20 of the papers presented at the conference, grouped into sections on acquisition and encoding of L2 phonology; L2 morphological processing; syntactic structures in L2; the lexical-syntactic interface; word learning and processing; individual differences in L2 learning; and applications of L2 research.