A definition of CALL
Computer Assisted Language Learning (CALL) is often perceived, somewhat narrowly, as an approach to language teaching and learning in which the computer is used as an aid to the presentation, reinforcement and assessment of material to be learned, usually including a substantial interactive element. Levy (1997:1) defines CALL more succinctly and more broadly as "the search for and study of applications of the computer in language teaching and learning". Levy's definition is in line with the view held by the majority of modern CALL practitioners. For a comprehensive overview of CALL see ICT4LT Module 1.4, Introduction to Computer Assisted Language Learning(CALL): http://www.ict4lt.org/.
A brief history of CALL
CALL's origins can be traced back to the 1960s. Up until the late 1970s CALL projects were confined mainly to universities, where computer programs were developed on large mainframe computers. The PLATO project, initiated at the University of Illinois in 1960, is an important landmark in the early development of CALL (Marty 1981). In the late 1970s, the arrival of the personal computer (PC) brought computing within the range of a wider audience, resulting in a boom in the development of CALL programs and a flurry of publications. Early CALL favoured an approach that drew heavily on practices associated with programmed instruction. This was reflected in the term Computer Assisted Language Instruction (CALI), which originated in the USA and was in common use until the early 1980s, when CALL became the dominant term. There was initially a lack of imagination and skill on the part of programmers, a situation that was rectified to a considerable extent by the publication of an influential seminal work by Higgins & Johns (1984), which contained numerous examples of alternative approaches to CALL. Throughout the 1980s CALL widened its scope, embracing the communicative approach and a range of new technologies. CALL has now established itself as an important area of research in higher education: see the joint EUROCALL/CALICO/IALLT Research Policy Statement: http://www.eurocall-languages.org /research/research_policy.htm. See also the History of CALL website: http://www.history-of-call.org/.
Traditional CALL
Traditional CALL programs presented a stimulus to which the learner had to provide a response. In early CALL programs the stimulus was in the form of text presented on screen, and the only way in which the learner could respond was by entering an answer at the keyboard. Some programs were very imaginative in the way text was presented, making use of colour to highlight grammatical features (e.g. gender in French and case endings in German) and movement to illustrate points of syntax (e.g. position of adjectives in French and subordinate clause word order in German). Discrete error analysis and feedback were a common feature of traditional CALL, and the more sophisticated programs would attempt to analyse the learner's response, pinpoint errors, and branch to help and remedial activities. A typical example of this approach is the CLEF package for learners of French, which was developed in the late 1970s and early 1980s by a consortium of Canadian universities. A Windows version of CLEF has recently been released: http://www.camsoftpartners.co.uk/clef.htm Error analysis in CALL is, however, a matter of controversy. Practitioners who come into CALL via the disciplines of computational linguistics, e.g. Natural Language Processing (NLP) and Human Language Technologies (HLT), tend to be more optimistic about the potential of error analysis by computer than those who come into CALL via language teaching: see ICT4LT Module 3.5,Human Language Technologies: http://www.ict4lt.org/. The approach adopted by the authors of CLEF was to anticipate common errors and build in appropriate feedback. An alternative approach is the use of Artificial Intelligence (AI) techniques to parse the learner's response - so-called "intelligent CALL" (ICALL) - but there is a gulf between those who favour the use of AI to develop CALL programs (Matthews 1994) and, at the other extreme, those who perceive this approach as a threat to humanity (Last 1989:153).
Explorative CALL
More recent approaches to CALL have favoured a learner-centred, explorative approach rather than a teacher-centred, drill-based approach to CALL. The explorative approach is characterised by the use of concordance programs in the languages classroom - an approach described as Data-Driven Learning (DLL) by Tim Johns (Johns & King 1991). There are a number of concordance programs on the market, e.g. MonoConc, Concordance,Wordsmith and SCP - all of which are described in ICT4LT Module 2.4, Using concordance programs in the modern foreign languages classroom: http://www.ict4lt.org/. See also Tribble & Jones (1990). The explorative approach is widely used today, including the use of Web concordancers and other Web-based CALL activities.
Multimedia CALL
Early personal computers were incapable of presenting authentic recordings of the human voice and easily recognizable images, but this limitation was overcome by combining a personal computer and a 12-inch videodisc player, which made it possible to combine sound, photographic-quality still images and video recordings in imaginative presentations - in essence the earliest manifestation of multimedia CALL. The result was the development of interactive videodiscs for language learners such as Montevidisco (Schneider & Bennion 1984), Expodisc (Davies 1991), and A la rencontre de Philippe (Fuerstenberg 1993), all of which were designed as simulations in which the learner played a key role.
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