Acquisition Language and languages Recherche 45 Research Langage et langues 39 Second language acquisition 34 Study and teaching 34 Langue seconde 32 Étude et enseignement 31 LANGUAGE ARTS & DISCIPLINES 31 General 28 Linguistics 26 FOREIGN LANGUAGE STUDY 24 Langage 22 Language acquisition 22 Grammar & Punctuation 16 Spelling 16 Alphabets & Writing Systems 14 Methodology 12 Méthodologie 12 Multi-Language Phrasebooks 12 Readers 12 Language Development 7 Psychological aspects 7 Foreign speakers 6 Interlanguage (Language learning) 5 Interlangue (Apprentissage des langues) 5 Psycholinguistics 5 Psycholinguistique 5 psycholinguistics 5