TY - JOUR AU - Keller, Karin AU - Trösch, Larissa AU - Grob, Alexander PY - 2015 TI - First-born siblings show better second language skills than later born siblings JO - Frontiers in Psychology VL - 6 IS - SP - 1 EP - 10 UR - http://dx.doi.org/10.3389/fpsyg.2015.00705 KW - birth order KW - sibling KW - second language acquisition KW - language proficiency KW - bilingualism ER -