I am doing research on the factors influencing SLA and need to classify the so-called 'external factors'. Has anybody come across a similar classification? Can you recommend any articles / books on the topic? Thanks.
If you are focusing on LANGUAGE ACQUISITION, you may look at the issues such as identity and what they formerly called "extrinsic" motivation. However, if you are dealing with LANGUAGE LEARNING, in a context outside English speaking countries like mine, you may look at curricular policies, ideological factors, teacher training (both pre-service & in-service) etc.
I have looked at some of these factors at a recent work I published about teaching writing.
A very valid question. Infact many of the English language mentors trace out easily the External factors which influence second language acquisition.
In my opinion the living ambience, peer group discussions, necessity and the importance of language in official places play vital role which influence the acquisition of 2nd language.
Elli's book cited above by Olga Ulloa will give you a very good start. You can also take a look at Catherine Doughty and Michael Long's "The handbook of second language acquisition" 2003, Blackwell. Also, feel free to PM me in either language.
Yes, there are certain 'external factors influencing second language acquisition', for instance, students' involvement in certain projects considering studying via translating. The following paper discusses these processes:
internal factors include variables such as age, motivation, anxiety, learning styles, learning strategies, self-esteem ...etc. External factors refer to variables related to classroom environment, teaching styles, targeted as well as native culture, peers participating in classroom activities, and so on.
I recommend to read academic writings of: Douglas Brown, Rod Ellis, McDonough, Gass, Stephen Krashen, Jack Richards, Rebecca Oxford
Ervin-Tripp, S.M. (2014). Conversational input to bilingual children. In Arnon, Inbal, Casillas, Marisa, Kurumada, Chigusa, and Estigarribia, Bruno (Eds.) Language in Interaction; Studies in honor of Eve Clark. [Trends in Language Acquisition Research 12] (pp. 13-27). Amsterdam: John Benjamins.
Here the idea is that input within family and school has different outcomes.