______ language acquisition device (LAD) 2) ______ stimulus and response 3) ______ the discourse theory 4) ______ acquisition and learning 5) ______ the input hypothesis a) The former refers to the subconscious process leading to the development of "competence"; the latter refers to conscious study and knowledge of grammatical rules. b) A sort of mechanism or device which contains the capacity to acquire one’ s first language. c) It assumes that humans acquire language in only one way--by understanding messages, or by receiving "comprehensible input". d) It believes there is little difference between the first language acquisition process and the process of second language acquisition--only through communication discourses. e) The former serves to elicit behaviour; the latter is triggered by the former.